how downgrade sm-a605fn from android 10 to 9 - Samsung Galaxy A6 Questions & Answers

Hello, I have a Samsung Galaxy A6+ with latest fw installed.
(italian version)
A605FNXXU7CUD4
The phone is totally useless after the update to android 10, it takes AGES to perform any action, even open the Camera or open a Message.
Already tried to wipe everything, hard reset, reinstall fw. Still useless.
Since I’d like to downgrade to Android 9 to have back a useful phone, I tried to install the latest Android 9 fw with Odin.
A605FNXXS5BTB1
But it fails, saying SW REV CHECK FAIL : [aboot] Fused 7 > Binary 5
What can I do?
Is there any chance to downgrade this phone?
Thank you

1. Unlock your bootloader.
2. Flash custom recovery for your device.
3. Go to custom recovery (TWRP) and flash any downloaded custom rom (for your device), GSI or save stock firmware as flashable zip with tool like ClassyKitchen.
4. Flash Magisk or RMM-bypass-v3 in TWRP to protect your bootloader from getting locked again.
Backup your personal data at first, of course.

nqnxev said:
1. Unlock your bootloader.
2. Flash custom recovery for your device.
3. Go to custom recovery (TWRP) and flash any downloaded custom rom (for your device), GSI or save stock firmware as flashable zip with tool like ClassyKitchen.
4. Flash Magisk or RMM-bypass-v3 in TWRP to protect your bootloader from getting locked again.
Backup your personal data at first, of course.
Click to expand...
Click to collapse
Almost done, but I can't find any custom rom available for download. Can someone help? Since wwith twrp I cannot install a stock rom. Thanks in advance.

I managed to flash a so called Ari's rom, but I think the phone is now bricked. It is on bootloop on the first screen of Samsung (with phone name and so on) and with SET WARRANTY BIT : KERNEL at top left. I think it is time to trash it or does someone have any hint? Thanks

Ecto1000 said:
I managed to flash a so called Ari's rom, but I think the phone is now bricked. It is on bootloop on the first screen of Samsung (with phone name and so on) and with SET WARRANTY BIT : KERNEL at top left. I think it is time to trash it or does someone have any hint? Thanks
Click to expand...
Click to collapse
I proposed three different options: custom rom, GSI (generic system image) or conversion stock firmware to flashable form. If there's no good custom rom for A6+, then don't worry - you can still try another options. Try playing with Generic System Images:
1. Flash your current stock firmware as usual in Odin.
2. Unlock bootloader and flash TWRP.
3. Go to TWRP.
4. Wipe partitions cache, dalvik, data, system (don't wipe vendor partition - it's needed).
5. Flash GSI image (recommended will be at first phhusson's AOSP (Android 9 or 10)) as "system image". You always need to choose and download "arm32_binder64" variant of img file.
6. Reboot to your new system.
Second option is to convert stock Android 9 firmware into flashable form.
1. Download ClassyKitchen tool.
2. Import downloaded Android 9 stock firmware (for your phone) into it and save it as flashable zip.
3. Go to TWRP.
4. Wipe cache, dalvik, data, system and vendor.
5. Flash your previously done zip with Android 9 as any other flashable zip in TWRP.
6. Flash Magisk or RMM-state-bypass-v3 in TWRP to prevent your bootloader from getting locked again.
7. Reboot.

I went for the second option, in Classykitchen I loaded the stock android 9 rom and selected
BUILD ZIP ROM (for recovery).
Then installed with TWRP following your wipe indications.
Success.
But when I went to install RMM-state-bypass-v3 I got the error impossile to mount /system.
So I rebooted twrp and before anything I manually mounted SYSTEM in twrp in the dedicated MOUNT menu, and I did everything again from wipe to install.
Is this procedure correct?
Success, success also for RMM-state-bypass-v3.
I rebooted but I'm again stuck in the same loop described in my previous reply.
When I selecr REBOOT in twrp, do I have to flag anything? For example System?
Regarding the first option, if I go there:
Releases · phhusson/treble_experimentations
Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.
github.com
exactly which file do I have to download among ASSETS of any release?
Thank you very much

Ecto1000 said:
I went for the second option, in Classykitchen I loaded the stock android 9 rom and selected
BUILD ZIP ROM (for recovery).
Then installed with TWRP following your wipe indications.
Success.
But when I went to install RMM-state-bypass-v3 I got the error impossile to mount /system.
So I rebooted twrp and before anything I manually mounted SYSTEM in twrp in the dedicated MOUNT menu, and I did everything again from wipe to install.
Is this procedure correct?
Click to expand...
Click to collapse
Yes, it's correct. If RMM bypass or Magisk.zip was flashed without any errors in TWRP then everything is okay. Just reboot to system in TWRP after that - there is option to reboot directly to system. First boot always can take a bit longer than next boots.
Ecto1000 said:
exactly which file do I have to download among ASSETS of any release
Click to expand...
Click to collapse
You always need to get any "arm32_binder64" (always AB) image. Gapps or vanilla is just your choice. Just get Android 9 or 10 image and flash it as "system image" (but wipe at first partitions specified in my previous post - don't wipe only Vendor partition, because it contains important things). Android 12 GSI still aren't stable. Android 11 - maybe will work properly. Android 9 and 10 should work fine. There is even short article about GSI on Galaxy A6+ with some fixes for that device attached:
Samsung Galaxy A6 Plus (2018)
Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.
github.com
You can try of course other GSI's as well:
Generic System Image (GSI) list
Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.
github.com

Thank you very much, appreciated.
But something weird happens: I install the ROM with success. If then I try to install Magisk (or Rmm) it fails with error 7.
And twrp says No Os installed if I reboot.
But if I try to install Magisk after rebooting into twrp after installing the ROM it goes without errors.
But anyway I have the issues of No Os installed.

Ecto1000 said:
Thank you very much, appreciated.
But something weird happens: I install the ROM with success. If then I try to install Magisk (or Rmm) it fails with error 7.
And twrp says No Os installed if I reboot.
But if I try to install Magisk after rebooting into twrp after installing the ROM it goes without errors.
But anyway I have the issues of No Os installed.
Click to expand...
Click to collapse
You need to reboot to recovery after flashing new system, because just after flashing TWRP doesn't recognize it - that is why you see that "no OS installed". Just reboot your phone to recovery again (you have such option in TWRP). In case of GSI (except maybe CAOS, LineageOS Q/R mod) Magisk or RMM bypass is not needed.
Btw, in case of any problems with hardware support on GSI flash also that patch in TWRP (it may be needed to mount "Vendor" partition in TWRP before flashing that fixes):
Fixes.zip
drive.google.com

Thank you again for your help.
I already rebooted to recovery and twrp keeps saying NO OS.
I'm using twrp 3.5.2_10-0.
I'm starting to suspect that this behaviour is due to the fact that this version of twrp could be too much new and unstable for my phone.
So I'd like to install an older version of twrp with Odin, as explained here:
TWRP for SM-A605FN Samsung Galaxy A6+
How to Install TWRP 3.2.3-1 on Galaxy A6+ SM-A605FN Android 8.0.0 Oreo. Once you installed TWRP recovery on your Samsung Galaxy A6+ SM-A605FN, you can customize it, Rooting or installing custom ROM
www.recovery-mode.com
But I cannot manage to go into download mode again, even from REBOOT menu of twrp it doesn't work, I keep staying in the loop explained before.
Moreover your first option of GSI need me to go into download mode to install the latest stock ROM with Odin.
I just manage to get into the attached screen.
Any idea?
Thank you again

It's not possible to ignore that message and just flash latest stock firmware via Odin? Odin refuses flashing latest stock firmware?
Other builds of TWRP for your devices you'll find here:
Releases · roynatech2544/TWRP_device_samsung_a6plte
Contribute to roynatech2544/TWRP_device_samsung_a6plte development by creating an account on GitHub.
github.com
But don't use TWRP older than 3.4.0, because it doesn't have support for "Vendor" partition.

Yes, I managed to ignore that screen and go in download mode again.
I tried to follow your first option since the second one was not successful.
Installed latest stock and then twrp 3.5.0-1.
Wipe as you explained, I flash the Gsi
system-quack-arm32_binder64-ab-gapps.img
The flash is very fast, but no errors, is it normal?
After that I reboot to recovery in order to flash
Disable_DM-Verity_ForceEncrypt_11.02.2020
it goes but just at the end it gives the error
failed to mount /odm no such file or directory.
And if I reboot to system the phone loops as always.
I'm losing all hope...

Ecto1000 said:
system-quack-arm32_binder64-ab-gapps.img
Click to expand...
Click to collapse
It's okay, but it's possible that you'll always need "vndklite" images for working camera.
Ecto1000 said:
The flash is very fast, but no errors, is it normal?
Click to expand...
Click to collapse
If you flashed it as "System Image" and it was successful then yes - should be fine. DM-Verity isn't needed for GSI - only RMM bypass v3 is sometimes needed (on CAOS, Lineage Q/R mod and maybe in case of some other images). On usual A600FN RMM bypass is not needed on phhusson AOSP. Just format "Data" partition (format, not only wipe) - it will remove encryption for you.
Procedure of flashing should be like that:
1. Wipe: cache, dalvik, data, system ("Vendor" partition leave untouched, because it's important for GSI - that is why you needed to flash stock firmware at first, because it adds vendor files for your phone, but it's needed only once, just don't wipe "Vendor").
2. Flash your GSI as "System Image".
3. Reboot phone (to recovery again).
4. Mount your "data", "vendor" and "system" partition.
5. Flash your zips: RMM bypass v3 (optionally Magisk).
5. Reboot to your new system now.
In case of any hardware support problems, reboot to TWRP again, mount "Vendor" partition and flash that fixes:
Fixes.zip
drive.google.com
Try to boot Android 10 or Android 9 images. If it will succeed, then you can try flashing Android 11 images and check what works, and what not. According to that article

nqnxev said:
It's okay, but it's possible that you'll always need "vndklite" images for working camera.
Click to expand...
Click to collapse
I don't know what are those images. Can you explain better?
When I proceed with RMM bypass V3 I see the errors in the attached image. It seems like there is a problem in writing to /system.
Can this be related to the hardware support problems you mentioned?
I tried with different versions of Twrp already and with Havoc Os too.
Should I try with flashing a different ROM ?
Thanks again

Ecto1000 said:
I don't know what are those images. Can you explain better?
Click to expand...
Click to collapse
Just look at filename of system images. But as I see, it's apparently important on Android 11 and newer. For now, try to boot Android 10 or 9. Let's try with that image:
https://github.com/phhusson/treble_experimentations/releases/download/v222/system-quack-arm32_binder64-ab-vanilla.img.xz
1. Decompress that image.
2. Copy to SD card or to internal storage.
3. Wipe cache, dalvik, data, system.
4. Format data partition (it's needed only once).
5. Flash downloaded and extracted file as "System Image".
6. Reboot phone to recovery (again).
7. Select in TWRP: Mount -> system, data, vendor.
8. Flash RMM bypass v3 (or Magisk).
9. Reboot now to system.
10. In case of some things not working, go back to TWRP and mount vendor partition (Mount -> tick "Vendor" -> go back to flashing zips) and flash that:
Fixes.zip
drive.google.com
11. Reboot to system again and check if now everything works properly.
Ecto1000 said:
When I proceed with RMM bypass V3 I see the errors in the attached image. It seems like there is a problem in writing to /system.
Click to expand...
Click to collapse
Yes, because you need to mount that partitions in TWRP:
Mount -> tick "system", "vendor" and "data" - and now flash whatever you want.

The only "receipt" which isn't giving installation errors is following your last instructions but avoiding to reboot to recovery after ROM flash (used Vanilla), and using Magisk v22 with unticked the line called "skip digest check" . See attached images.
Anyway, still no success to get into android.
Also tried fixes.zip.

Maybe I have to try with sideload ?

Ecto1000 said:
The only "receipt" which isn't giving installation errors is following your last instructions but avoiding to reboot to recovery after ROM flash (used Vanilla), and using Magisk v22 with unticked the line called "skip digest check" . See attached images.
Anyway, still no success to get into android.
Also tried fixes.zip.
Click to expand...
Click to collapse
Everything seems to be okay in your photos. What happens when you press "Reboot System"?

nqnxev said:
Everything seems to be okay in your photos. What happens when you press "Reboot System"?
Click to expand...
Click to collapse
The phone goes into loop with the attached screen and black screen alternatively.
On the top you can see SET WARRANTY BIT: KERNEL, it should be normal right?
Do I have to set something inside MOUNT of twrp before rebooting to system?

Ecto1000 said:
The phone goes into loop with the attached screen and black screen alternatively.
On the top you can see SET WARRANTY BIT: KERNEL, it should be normal right?
Do I have to set something inside MOUNT of twrp before rebooting to system?
Click to expand...
Click to collapse
I've never had such problem, but according to that thread it seems that it's a fault of modified kernel (so don't flash Magisk with GSI, because it patches kernel).
Try to flash stock firmware, unlock bootloader, flash TWRP, format "data" partition, wipe partitions (cache, dalvik, system, data) and flash GSI image as "system image". And reboot to system.
Don't flash RMM and Magisk for now - and check if system will run properly.

Related

How to? MAGISK for Oreo Exynos

I failed similar times to root my phone with twrp 3.2.xx and 3.1.xx. I used Odin 3 v3.13.1.
Any ideas or thread links for the young padawan?
I appreciate your advice masters :good:
Using Odin Flash TWRP latest from the note 8 TWRP thread here on XDA, one on their site is not latest.
Install magisk manager app from play store.
Download magisk from the app.
Reboot to TWRP and flash the magisk file just downloaded.
Reboot and check magisk manager for root and hide.
Should be good.
Nope. Not working and still ends in a bootloop and it's unable to mount the internal storage.
Something went wrong, so.. my phone is unable to boot the system after that!
The issue is the version of TWRP and Oreo, its not yet compatible on this device, it needs porting over
If you want MAGISK you need to do it all in one hit.
Flash TWRP
Select Read Only Option.
Format Data
Reboot Recovery
Flash the DM Verify Encrypt file
Reboot Recovery, You could be able to flash files wihtout a Data mount error.
Now flash the files you want, i..e MAGISK
Once you have booted the ROM and return back to TWRP you are unable to mount Data.
This can cause various issue when flashing files
Funny you.. How can I format if the internal storage isn't able to mount?
"Select Read Only Option.
Format Data" <-- seems like a contradiction to format a missing
partition.
I think we need to wait until someone will port the twrp for Oreo. cheerio!
Because it needs to be done when you first flash it.
Once you have flash Oreo, Then TWRP, You boot into TWRP and format. You then Flash the DM Verify.
Data is accessible, its empty but accessible, Flashing any files like MAGISK work without any errors.
I have it all working on mine without any issues, I do know if i need to flash any additional files it wont work properly due to Data no longer mountable.
There is a updated version of TWRP that fixes this, but its not been ported over.

Android 4.2 and 4.4 Mediatek bootloop after installing Magisk 18.1

Hello everybody.
I've read that 18.1 supports 4.2+ so I've tried to install in two MTK6589T devices I've. One running 4.2, the other running 4.4
CMW/TWRP gave an error mounting system, so I mounted system manually and it started flashing. Firstly it detected old root installed and disabled the old root. But when it tried to find the boot, installation was aborted because installator claims cannot find the boot on both phones.
Then I though, okay, lets reboot back to android, I will try to install a few days later, maybe its buggy now, but both phones cannot boot.
I can easily fix them by flashing rom again I guess, but I would like to know where's the issue and also post it for more people could face the same problem.
Any idea where's the problem/how to fix without rom reflashing? I've tried magisk uninstaller but after mounting system in recovery it is also giving error.
Thanks
UPDATE: For now, if no other solution is found, bootloop can be bypassed by dirty installing the rom again. But it has to be an easier workaround...
We know now that the problem is caused because of two factors merging:
1- Using Magisk.zip installer through custom recovery
2-In the case that the custom recovery CMW/TWRP installed in the phone is very old (for instance, CMW automade for MTK6589X or TWRP 2.5.0).
While installing, Magisk tries to send commands to the custom recovery that cant be understood by it, leaving the installation incomplete after some modifications in /system (read below recovery log).
Acording to the recovery, it seems that Magisk did some modifications without running correctly survival script - Adding addon.d survival script ("Unrecognized option '-Xnodex2oat'") and .zip installer is not designed to revert actions in this case.
Also, Magisk couldn't reach the boot modification step, so boot is not damaged, therefore workarounds for restoring boot won't work.
Using Magisk Unistaller.zip is also not possible as the uninstaller is mainly designed for boot backup restoration, and again, this is not the case.
Currently needed: Find what's wrong in system due to the incomplete Magisk installation to revert it back to the original state (before faulty magisk.zip installation).
Recovery log:
************************
* Magisk v18.1 Installer
************************
- Mounting /system, /vendor
- Target image: /dev/bootimg
- Device platform: arm
- Removing system installed root
- Constructing environment
- Adding addon.d survival script
Unrecognized option '-Xnodex2oat'
up!
I' also having the same problem. My Samsung J2 Prime stuck at logo after updating to 18.1. Any tips on how to fix it without resetting my phone? Thanks.
Update: Bootloop fixed. I used TWRP to restore boot image. I then update Magisk by flashing zip file from TWRP. Everything went back to normal. Hope this help.
trol_sg said:
Hello everybody.
I've read that 18.1 supports 4.2+ so I've tried to install in two MTK6589T devices I've. One running 4.2, the other running 4.4
CMW/TWRP gave an error mounting system, so I mounted system manually and it started flashing. Firstly it detected old root installed and disabled the old root. But when it tried to find the boot, installation was aborted because installator claims cannot find the boot on both phones.
Then I though, okay, lets reboot back to android, I will try to install a few days later, maybe its buggy now, but both phones cannot boot.
I can easily fix them by flashing rom again I guess, but I would like to know where's the issue and also post it for more people could face the same problem.
Any idea where's the problem/how to fix without rom reflashing? I've tried magisk uninstaller but after mounting system in recovery it is also giving error.
Thanks
Click to expand...
Click to collapse
If you have a backup of your boot image, you can just restore it using TWRP. But in case that you have no backup of boot image, you can try to get boot image from the internet and restoring using it. In my case, this is what I did.
1. Go to TWRP and then make backup of boot image of the faulty phone*. (Folder 1)
2. I used another J2 prime to create a boot image backup. (Folder 2)
3. Once that is done, copy and replace the files inside the Folder 2 into Folder 1.
4. Reboot to TWRP again then use that to restore the boot image on my stuck J2.
Tips: make backup in SD card so you can easily swap it in between the bad and good phone.
*This is to create a folder of the backup file. I did tried to directly copy and paste the backup boot image file from another good phone but TWRP didn't detect it. So this is the workaround that I come with. And it worked for me.
Thanks for your answer but I doubt your case is mine. Your device is much newer than mine and according to your comment, you've sucesfully installed previous version of Magisk without issues. This is not a problem while updating, as Magisk v. earlier than 18.1 was not compatible with android 4.2+. I think Magisk is not compatible with MT6589T even if they run 4.2 or 4.4.
I think that it cannot be a boot problem as TWRP/CWM displayed msg 'Boot cannot be found' while installing Magisk, so that I don't think boot was replaced or modified in any ways. Moreover, the bootloop is not in the boot loading, as phone can pass boot image without any problem, but it is stuck in android loading image. I'm thinking in some script or root modification that Magisk did before trying to unpack the boot, however I'm not that deep into the Magisk install to find the proper workaround.
I can restore boot backup and also I can take boot file from the original rom and flash, because in Mediatek-based devices, boot.img is inside de zip, but I dont think it will solve the problem. Anyhow I'll get back ASAP with the answer.
Any more ideas??
Nothing, boot/uboot restoration or flashing again just the boot won't fix the problem, so it's something that Magisk installator touch in /system or /data I guess, but what?
trol_sg said:
Nothing, boot/uboot restoration or flashing again just the boot won't fix the problem, so it's something that Magisk installator touch in /system or /data I guess, but what?
Click to expand...
Click to collapse
Have you read/tried this?
didgeridoohan(dot)com/magisk/MagiskIssues
Ato09 said:
Have you read/tried this?
didgeridoohan(dot)com/magisk/MagiskIssues
Click to expand...
Click to collapse
Yes, I've read them before I made the post. I've also looked for a solution in some of the threads and using search, but couldn't find a way.
Here I attach recovery.log if someone is interested to see the detailed problem.
Also, here below I attach the lines concerning the installation. All other is uninstallation tries and so on:
************************
* Magisk v18.1 Installer
************************
- Mounting /system, /vendor
- Target image: /dev/bootimg
- Device platform: arm
- Removing system installed root
- Constructing environment
- Adding addon.d survival script
Unrecognized option '-Xnodex2oat'
dalvikvm: [options] class [argument ...]
dalvikvm: [options] -jar file.jar [argument ...]
The following standard options are recognized:
-classpath classpath
-Dproperty=value
-verbose:tag ('gc', 'jni', or 'class')
-ea[:<package name>... |:<class name>]
-da[:<package name>... |:<class name>]
(-enableassertions, -disableassertions)
-esa
-dsa
(-enablesystemassertions, -disablesystemassertions)
-showversion
-help
The following extended options are recognized:
-Xrunjdwp:<options>
-Xbootclasspath:bootclasspath
-Xcheck:tag (e.g. 'jni')
-XmsN (min heap, must be multiple of 1K, >= 1MB)
-XmxN (max heap, must be multiple of 1K, >= 2MB)
-XssN (stack size, >= 1KB, <= 256KB)
-Xverify:{none,remote,all}
-Xrs
-Xint (extended to accept 'ortable', ':fast' and ':jit')
These are unique to Dalvik:
-Xzygote
-Xdexopt:{none,verified,all,full}
-Xnoquithandler
-Xjniopts:{warnonly,forcecopy}
-Xjnitrace:substring (eg NativeClass or nativeMethod)
-Xstacktracefile:<filename>
-Xgc:[no]precise
-Xgc:[no]preverify
-Xgc:[no]postverify
-Xgc:[no]concurrent
-Xgc:[no]verifycardtable
-XX:+DisableExplicitGC
-X[no]genregmap
-Xverifyopt:[no]checkmon
-Xcheckdexsum
-Xincludeselectedop
-Xjitop:hexopvalue[-endvalue][,hexopvalue[-endvalue]]*
-Xincludeselectedmethod
-Xjitthreshold:decimalvalue
-Xjitcodecachesize:decimalvalueofkbytes
-Xjitblocking
-Xjitmethod:signature[,signature]* (eg Ljava/lang/String\;replace)
-Xjitclass:classname[,classname]*
-Xjitoffsetffset[,offset]
-Xjitconfig:filename
-Xjitcheckcg
-Xjitverbose
-Xjitprofile
-Xjitdisableopt
-Xjitsuspendpoll
Configured with: debugger profiler hprof jit(armv7-a-neon) smp show_exception=1
Failed to initialize runtime (check log for details)
- Unpacking boot image
MagiskBoot v18.1(18100) (by topjohnwu) - Boot Image Modification Tool
Parsing boot image: [/dev/bootimg]
No boot image magic found!
! Unable to unpack boot image
- Unmounting partitions
E:Error executing updater binary in zip '/sdcard/Magisk-v18.1.zip'
Error flashing zip '/sdcard/Magisk-v18.1.zip'
@trol_sg I'm gonna guess it's got to do with the absolutely ancient TWRP you're using. It just can't handle everything that the Magisk installation script is trying to do...
Your best bet (if Magisk will work at all on your device) is to patch the boot image with the Magisk Manager and then flash the patched image manually. There are new and shiny installation instructions available here: https://topjohnwu.github.io/Magisk/
Didgeridoohan said:
@trol_sg I'm gonna guess it's got to do with the absolutely ancient TWRP you're using. It just can't handle everything that the Magisk installation script is trying to do...
Your best bet (if Magisk will work at all on your device) is to patch the boot image with the Magisk Manager and then flash the patched image manually. There are new and shiny installation instructions available here: https://topjohnwu.github.io/Magisk/
Click to expand...
Click to collapse
Thank you so much for your answer. So it's the recovery, but can't find newer ones, sadly. Too old phones I know, but just curious if I could make Magisk working on them, lol.
I was going into the boot modification manually right now, but in order to patch the boot I need manager installed first, and phone couldn't boot so I did dirty flash of the rom to be able to boot into it again.
Lets see what happens then. I'll be right back.
Anyhow, this is not a solution to fix the problem of bootloop that I am requesting help in case someone could face the same and did not make a backup of the phone and didn't want to make dirty re-flash. Any idea?
Update: After I did dirty flash of the rom, and now Jiayu g3s android 4.4 booted.
UPDATE: So, after patching manually boot and installing (using restore in TWRP 2.5 as image flash is not yet implemented AFAIK), phone booted and yes Magisk is working.
Magisk installation .zip through a very old recovery is making the bootloop. So that, a thing learnt now.
But, for other people facing this bootloop, can we do a research to find what magisk.zip did to the phones to leave them in bootloop? Maybe we can revert without rom flashing easily if we knew what's the issue...
Thanks in advance!
Doing a bit more tests I found that magisk.zip did something in /system so that it is left in bootloop, but still no idea why/whats causing that...
There are delay complete boot like 4 5 second in j7 prime. I didn't love this version
any more help?? up!!
trol_sg said:
Yes, I've read them before I made the post. I've also looked for a solution in some of the threads and using search, but couldn't find a way.
Click to expand...
Click to collapse
Try this.
Quote:
Originally Posted by void74
I faced this problem too this morning.
I have a Redmi Note 5 with AOSiP ROM, I don't know if it's the right way to do it, but I solved the bootloop problem this way:
- volume up and then boot to TWRP
- copied magisk uninstall to phone memory
- installed magisk uninstall
- rebooted in fastboot/bootloader mode
- flashed original boot.img extracted from stock image zip file ("fastboot flash boot boot.img")
- rebooted to TWRP
- installed magisk 17.0 zip file
- rebooted to system, all OK!
Only problem is that I lost previous magisk configuration, but it's a snap to reconfigure it!
Quote:
Originally Posted by Mangraviti
Here is what to do, if you HAVE NOT installed the new version:
1) Do not update via Magisk Manager.
2) Do not update via TWRP using the zip you can download via Magisk Manager.
3) Uninstall Magisk using Magisk uninstaller (ZIP).
4) Boot to Android.
5) Reboot to TWRP
6) Install V17 ZIP via TWRP and boot to Android.
If you HAVE INSTALLED and got a bootloop:
1) Download the uninstaller ZIP.
2) Enter TWRP during the bootloop.
3) Uninstall using the uninstaller ZIP.
4) Boot to Android.
5) Download V17.
6) Reboot to TWRP and flash the V17.
7) Boot to Android it it should be working.
-------------
Original post. https://forum.xda-developers.com/apps/magisk/bootloop-magisk-update-t3836904
Hope it help.
Ato09 said:
Try this.
Quote:
Originally Posted by void74
I faced this problem too this morning.
I have a Redmi Note 5 with AOSiP ROM, I don't know if it's the right way to do it, but I solved the bootloop problem this way:
- volume up and then boot to TWRP
- copied magisk uninstall to phone memory
- installed magisk uninstall
- rebooted in fastboot/bootloader mode
- flashed original boot.img extracted from stock image zip file ("fastboot flash boot boot.img")
- rebooted to TWRP
- installed magisk 17.0 zip file
- rebooted to system, all OK!
Only problem is that I lost previous magisk configuration, but it's a snap to reconfigure it!
Quote:
Originally Posted by Mangraviti
Here is what to do, if you HAVE NOT installed the new version:
1) Do not update via Magisk Manager.
2) Do not update via TWRP using the zip you can download via Magisk Manager.
3) Uninstall Magisk using Magisk uninstaller (ZIP).
4) Boot to Android.
5) Reboot to TWRP
6) Install V17 ZIP via TWRP and boot to Android.
If you HAVE INSTALLED and got a bootloop:
1) Download the uninstaller ZIP.
2) Enter TWRP during the bootloop.
3) Uninstall using the uninstaller ZIP.
4) Boot to Android.
5) Download V17.
6) Reboot to TWRP and flash the V17.
7) Boot to Android it it should be working.
-------------
Original post. https://forum.xda-developers.com/apps/magisk/bootloop-magisk-update-t3836904
Hope it help.
Click to expand...
Click to collapse
Hello, thanks
This method won't work in my case as in the step:
- installed magisk uninstall = gives error
Note 5 is much newer phone with a recent recovery TWRP that allows all Magisk.zips commands, but unluckyly not this case.
Also, this method is for wrong boot installation/damaged boot. In my case what Magisk damage is /system, not boot.
I wish it could be boot, because that is very easy to fix (flashing through fastboot/SP Flash tools in the case of MTK, recovering boot twrp "backup" even if you didn't make backup...) as you mentioned.
Hope someone have a great idea to revert system to origin, then we could post the solution for those who would like to install Magisk in 4.2+ old phones, and instead of doing boot flash manually, they try to flash magisk.zip and they got bootloop.
Main post updated with all thread information. Up!
Nothing?? Up!!
trol_sg said:
Hope someone have a great idea to revert system to origin, then we could post the solution for those who would like to install Magisk in 4.2+ old phones, and instead of doing boot flash manually, they try to flash magisk.zip and they got bootloop.
Click to expand...
Click to collapse
The only part of the Magisk installation that actually touches /system is if it installs the addon.d survival script. The log you posted earlier shows that it's trying to do this, for some reason, and failiing. I'd start looking there...

[Treble Project] How to download and install Treble Project for J7 Prime

Steps to install Treble ROMs on Galaxy J7 Prime.
Prerequisite:
1. Flash TWRP recovery. For Treble Project I suggest version 3.2.1 here because there is an issue about mounting /preload partition with 3.2.3+. You can try newer versions for your choices. If you see /preload error, Some suggested to ignore this error.
2. For emergency, please download Stock ROM here. If you accidentally mess up your partitions or consistently bricks, Stock ROM will reset everything back to start.
Needed Files:
1. Files from Project Spaget X here.
Exynos7870_CreateVendor.zip is to create /vendor partition.
Exynos7870_ProjectSpaget_V3.0.zip is to install necessary for Treble Project.
Exynos7870_RevertVendor.zip is to delete /vendor partition, in case of uninstalling Treble Project.
2. Treble ROM with ARM64 A only here. My favorite Treble ROMs are Lineage, Arrow and Havoc. I am currently using Arrow.
3. ARM64 GAPPS here.
4. Kraken Kernal here or here. Please download for Treble only. RC12 is universal.
5. Magisk here.
Step I Flash Treble project:
1. boot TWRP recovery
2. wipe Data, Cache, Dalvik, System
3. flash Exynos7870_CreateVendor.zip and reboot to recovery
4. flash Exynos7870_ProjectSpaget_V3.0.zip
Step II Flash Treble ROM:
1. flash Treble ROM ARM64 A only, no need to reboot to recovery in order to install the ROM.
Edit: Reboot to Recovery > Install > press Install Image > choose your Rom.img
2. After flashing the ROM, I usually reboot to system in order to test whether or not the flashed ROM can boot nicely.
2.1 If the flashed ROM cannot boot or brick or bootloop in Logo, press Home + Power + Vol Down to force reboot to Bootloader and boot to recovery.
2.2 Back to recovery. wipe Data, Cache, Dalvik, System
2.3 flash Exynos7870_ProjectSpaget_V3.0.zip before flashing new Treble ROM.
Step III Flash ARM64 GAPPS:
1. Choose Wipe > Advanced Wipe > choose System > Repair > Resize. Sometimes you need to do this twice in order to resize since the first time will show error.
2. flash GAPPS
Step IV Flash Kraken Kernal:
1. Mount > System and Vendor partitions
2. flash KRAKEN-Kernel-RC12-universal7870-Treble-20200314.zip (The latest version of Kraken)
3. reboot to system
I usually reboot once to system before flashing Magisk.
Step V Flash Magisk:
1. Mount > System and Vendor partitions
2. flash Magisk to root
3. reboot to system
4. run Play Store and set up your account
5. run Magisk Manager. When you press Tap to start SafetyNet check, you will find out that ctsProfile: false.
Please note that Usually it will be installed when you have GAPPS installed. If not, you can install Magisk Manager manually.
6. choose Downloads > search "SafetyPatch by hackintosh" > download and install > reboot This will fix ctsProfile false to be true.
Now you are done the basice steps to flash Treble ROMs for your J7 Prime. Any questions please leave a message under the thread.
Cheers, :highfive::highfive::highfive:
Thanks for your helpful post, but when i tried to flash system.img via TWRP, it showed just boot and recovery partition, i cant see system partition to choose, please help me. Thank you and sorry for my bad English
---------- Post added at 05:11 PM ---------- Previous post was at 04:53 PM ----------
dctviphb2 said:
Thanks for your helpful post, but when i tried to flash system.img via TWRP, it showed just boot and recovery partition, i cant see system partition to choose, please help me. Thank you and sorry for my bad English
Click to expand...
Click to collapse
i can flash now but when i flashed system.img completed, TWRP said that no OS installed, what can i do. thanks for your help
dctviphb2 said:
Thanks for your helpful post, but when i tried to flash system.img via TWRP, it showed just boot and recovery partition, i cant see system partition to choose, please help me. Thank you and sorry for my bad English
---------- Post added at 05:11 PM ---------- Previous post was at 04:53 PM ----------
i can flash now but when i flashed system.img completed, TWRP said that no OS installed, what can i do. thanks for your help
Click to expand...
Click to collapse
Please follow the attached screentshot.
1. In the main menu of TWRP, choose Install.
2. Choose your ROM.img
3. Select System Image. This step will tell TWRP to flash your ROM.img to the /system partition.
Note: Attached Screenshots #1-3 is to show steps to mount your /system and /vendor partition. Before your can do these steps, you need to flash Spaget X in the step I of my original post.
Hope this help.
siamese007 said:
Please follow the attached screentshot.
1. In the main menu of TWRP, choose Install.
2. Choose your ROM.img
3. Select System Image. This step will tell TWRP to flash your ROM.img to the /system partition.
Note: Attached Screenshots #1-3 is to show steps to mount your /system and /vendor partition. Before your can do these steps, you need to flash Spaget X in the step I of my original post.
Hope this help.
Click to expand...
Click to collapse
Thank you. I just remember that when i flash spaget my TWRP said "symlink: some symlink faild. Error 7". I have tried both TWRP 3.2.1 and 3.2.3 but both of them didnot work. I think i will try another version, or if you have any idea please tell me. Thank you so much
dctviphb2 said:
Thank you. I just remember that when i flash spaget my TWRP said "symlink: some symlink faild. Error 7". I have tried both TWRP 3.2.1 and 3.2.3 but both of them didnot work. I think i will try another version, or if you have any idea please tell me. Thank you so much
Click to expand...
Click to collapse
You're welcome. I honestly never experience this kind of error.
I found a solution about this error on youtube.
This solution is to extract ROM file and edit updater-script file with notepad++.
Edit: try this Spaget X file. I followed this youtube tutorial trying to fix error 7 that you got when flashing Spaget X.
Another possibility of this error is Partition messed up.
I would try to flash stock ROM with Odin to reset everything to factory default.
Caution: Back up your data before flashing Stock ROM.
Follow the instruction of how to flash Stock ROM in the Stock ROM page or here. Flashing Stock ROM will also remove TWRP recovery and re-partition.
Hope one of this solution help, :highfive::highfive::highfive:
Thank you so much. I think the problem is I am using HROM, which has Repatition.zip, so I think that my partition has messed up, that the reason I face the issue. I will try to solve it with your idea. Thanks so much for helping me, if I can solve the problem I will tell you
Thanks for your helping, after having flashed PIT files I has installed ArrowOS. I found that if TWRP show "No OS installed" after flashing ROM.img we must flash Spaget again to boot normally. Anyway I found that ArrowOS when I turn off screen for a while, when turn it on, it takes about 5s to screen on, do u have any solution? anyway tks so much
dctviphb2 said:
Thanks for your helping, after having flashed PIT files I has installed ArrowOS. I found that if TWRP show "No OS installed" after flashing ROM.img we must flash Spaget again to boot normally. Anyway I found that ArrowOS when I turn off screen for a while, when turn it on, it takes about 5s to screen on, do u have any solution? anyway tks so much
Click to expand...
Click to collapse
That's great NEWS. You've managed to find a solution for No OS installed error.
By the way, for the deep sleep problem that you mentioned, I also experience the same thing. My solution is to press home button to immediately wake the phone up from deep sleep.
[HELP]Treble Incompatible device (J7 PRIME)
I'm also using J7 prime G610F...but when i used Treble Checker is showed my device is Treble Incompatible...I don't understand why it is not working for me while you guys have the same phone and its working...also i'm using a custom rom (reserruction remix) so perhaps should i load up my stock system then try? I also tried to install the Treble project using the steps above but i couldn't flash the image...twrp was only detecting zip files and when i clicked in INSTALL IMAGE it would.nt show any image file which i transferred in my phone
hussain_mdj said:
I'm also using J7 prime G610F...but when i used Treble Checker is showed my device is Treble Incompatible...I don't understand why it is not working for me while you guys have the same phone and its working...also i'm using a custom rom (reserruction remix) so perhaps should i load up my stock system then try? I also tried to install the Treble project using the steps above but i couldn't flash the image...twrp was only detecting zip files and when i clicked in INSTALL IMAGE it would.nt show any image file which i transferred in my phone
Click to expand...
Click to collapse
Unpack .xz file
TWRP still doesn't detect the image
thanhphat95 said:
Unpack .xz file
Click to expand...
Click to collapse
...
---------- Post added at 12:53 AM ---------- Previous post was at 12:48 AM ----------
thanhphat95 said:
Unpack .xz file
Click to expand...
Click to collapse
i'm dummy dum so forgive and thenk
dctviphb2 said:
Thanks for your helping, after having flashed PIT files I has installed ArrowOS. I found that if TWRP show "No OS installed" after flashing ROM.img we must flash Spaget again to boot normally. Anyway I found that ArrowOS when I turn off screen for a while, when turn it on, it takes about 5s to screen on, do u have any solution? anyway tks so much
Click to expand...
Click to collapse
There is a solution...in phh treble settings go to doze then turn on out of pocket feature....works like a charm for me.....
------------
HAPPY TO HELP..

Installing, Updating, Backup and Restore Guide for OP6/6T

This is a bit late but why not. THIS IS A COMPILATION OF ALL THE OS METHODS YOU NEED FOR THE OP6/6T.
ENJOY my guide
DISCLAIMER:
*I am not responsible for bricked devices, damage to your device*
Sorry for a long list of methods, some work for others and some don't. But I recommend to pick a method and stick to it. Maybe read the part at the top as some have notes about mine or someone else's experience/recommendation. Don't skip steps and follow each step.
If stuck, just ask and I or anyone else will try and help
I am here to post methods for anyone who is interested/need help. I have tested these myself and helped others who may be struggling
Download
The guide has loads of files/ zips/ tools to use/flash/install. But no worries as everything can be downloaded and there are links AT THE BOTTOM OF THIS THREAD (NOT COMMENTS) to where to download:
SDK Platform Tools (Fastboot tools) from Developer Android
TWRP from mauronofrio
Magisk from topjohnwu
Gapps (Google Apps) from NikGapps. I recommend omni for ROMs that don't include Gapps.
Fastboot ROM for OP6 + OP6T from mauronofrio
MSMDownload tools for OP6 + OP6T from Some_Random_Username
IMPORTANT NOTES!
YOU REQUIRE Platform Tools (Fastboot Tools) IN ORDER TO USE THE METHODS IN THIS GUIDE AS TWRP NEEDS TO BE INSTALLED!
YOU NEED TO HAVE A UNLOCKED BOOTLOADER AS WELL!
For GAPPS, u can use the same or a updated version of the package. But has to be the same type u used to install it like (stock, full, Omni, basic, etc). ONLY FLASH/INSTALL IF the RESTORE SCRIPT DIDN'T SHOW UP during a DIRTY FLASH/UPDATE AND ONLY FLASH AFTER REBOOTING TO RECOVERY AFTER FLASHING/INSTALLING A OS/BUILD ZIP FILE!
How to get Platform Tools
These tools are used to install TWRP, to unlock the bootloader of your device and is needed to use the METHODS in this guide.
Download the platform tools.zip of your software platform (Mac, Windows, Linux)
Extract the platform-tools.zip
To use it go into your platform-tools folder
Press shift + right-click and choose command prompt or PowerShell
Connect your device when it's in fastboot mode and done
How to install TWRP
Sadly this Guide is for Windows, but other platforms like Mac or Linux can be found online.
YOU CAN USE THIS METHOD TO INSTALL A NEWER VERSION OF TWRP TOO
You need to have downloaded Platform Tools which the link is attached below.
Transfer the TWRP.img file into the platform-tools folder
Now transfer TWRP.zip into your device's internal storage. (connect -> allow file transfer -> drag and drop files)
If you want root download and transfer magisk.apk and the link is supplied below. Also, RENAME from .apk to .zip
Now we must boot into fastboot mode. (Either do it with the advanced reboot in developer options or power off device -> boot recovery Vol - + power -> boot to bootloader or power off device -> press Vol Up + Vol down + power)
Now connect your device to a Windows device
Press shift + right-click. Choose command prompt or PowerShell
Enter "fastboot devices" and your device should be displayed if it's connected
Type "fastboot boot twrp" file name (do twrp + press tab) and press enter
Then you should be booted into TWRP
Enter the password and swipe to allow modifications
Press install and find your TWRP.zip file
Swipe to confirm Flash
If you want root do this
Press the back arrow and find your magisk.zip
Swipe to confirm Flash
Reboot to the system and done
Otherwise, just reboot to system. Up to u
Installing a Custom ROM
Install Custom ROM on OP6T from OOS
Make sure u have BACKED UP your device and have the latest OOS installed in both slots. If u do, go to Method 3.
If u have finalize.zip, go to Method 2.
Method 1
If u don't have OOS installed in both slots or finalize.zip, use this method.
Transfer OOS.zip file, TWRP.zip, Build.zip (Custom ROM zip file) into internal storage.
Boot to Bootloader
Boot TWRP
Flash OOS + TWRP
reboot recovery
Flash OOS + TWRP
Reboot recovery
Flash Build.zip (Custom ROM zip file)
Flash TWRP
If the ROM doesn't have GApps included do this
Reboot to recovery
Flash Gapps if not included
Format data
Reboot to system
Otherwise, just Format data -> reboot to system. Up to u
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system. Up to u
Method 2
If u have finalize.zip, do this method. Using finalize is way quicker as there's less flashing and rebooting.
Transfer OOS.zip file, finalize.zip, TWRP.zip, Build.zip (Custom ROM zip file) into internal storage.
Boot to Bootloader
Boot to TWRP
Flash OOS + finalize
Boot to Bootloader
Boot to TWRP
Flash Build.zip (Custom ROM zip file)
Flash TWRP
If the ROM doesn't have GApps included do this
Reboot to recovery
Flash Gapps if not included
Format data
Reboot to system
Otherwise, just Format data -> reboot to system. Up to u
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system. Up to u
Method 3
Once you have installed OOS in both slots do this part.
Transfer TWRP.zip, Build.zip (Custom ROM zip file) into internal storage.
Boot to Bootloader
Boot to TWRP
Flash Build.zip (Custom ROM zip file)
Flash TWRP
If the ROM doesn't have GApps included do this
Reboot to recovery
Flash Gapps if not included
Format data
Reboot to system
Otherwise, just Format data -> reboot to system. Up to u
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system. Up to u
Installing Custom Rom not from OOS
You can use finalize method or just flash OOS + TWRP way. The finalize way is there for some who like less flashing and rebooting.
Using the methods in Install Custom ROM on OP6T from OOS
Using the old way, use Method 1
Using finalize.zip, use Method 2
Remember to factory reset (wipe, but no need to wipe internal storage)
Backing Up OOS and Custom ROM
Make sure u have installed the latest TWRP version from mauronofrio
You should use TitaniumBackup or Migrate to back up your apps and contacts.
Also, have a copy of your Internal Storage folders if u have important files.
TWRP Backup backs up your OS like Apps, settings and set up, but not internal storage.
NEVER BACKUP SYSTEM AND VENDOR! ONLY SYSTEM.IMG or VENDOR.IMG IF YOU HAVE TO!
Restoring it makes going back way easier like you have never left
Or you can go manually and try and restore everything, but why do that when you got TWRP?
I do both ways of backing up
Backing up OOS
Boot TWRP recovery
Choose Backup
Choose boot, data. YOU DO NOT NEED TO BACKUP System.img and Vendor.img!
Swipe to backup
Once done, either boot to system or mount
Transfer the whole TWRP folder onto a storage device
Done
Backing up a Custom ROM
Boot TWRP recovery
Choose Backup
Choose boot, data, system.img, vendor.img
Swipe to backup
Once done, either boot to system or mount
Transfer the whole TWRP folder onto a storage device
Done
Restoring OOS and Custom ROM
Restoring OOS TWRP Backup
To restore OOS use either fastboot ROM or MSM. Fastboot is the fastest and easiest way if u have a TWRP backup which there's a method to how to make one in this guide. BUT if you are restoring to go back to stock OOS then use MSM
I use Fastboot ROM restore for that too as we are restoring our data anyways and also for switching/installing a custom ROM. Much easier in my experience.
DOWNLOAD FULL ZIP OF OOS version of your TWRP backup otherwise you could risk doing the whole restore method again OR setup from SCRATCH! IF you aren't restoring a TWRP backup, I recommend either TRANSFER or DOWNLOAD via WiFi or oxygen updater, a UPDATED version of OOS AFTER doing either fastboot ROM or MSM restore methods. As they restore a old version of OOS!
Restoring using Fastboot ROM
Download fastboot ROM of your choice using the link in the Download Link section.
Extract/ un-zip
Boot your device into fastboot mode (Either do it with the advanced reboot in developer options or power off device -> boot recovery Vol - + power -> boot to bootloader or power off device -> press Vol Up + Vol down + power)
Click flash-all.bat
Restoring using MSM Download Tool
Download latest MSM version of your choice using the link in the Download Link section.
Extract/ un-zip
Click on MSM tool .exe file
Turn off device
HOLD BOTH volume buttons
Connect your phone
Wait for your device to be connected and it should show as green
Click verify to check and press start
Wait till phone reboots
The setup device and u can carrying on restoring your device if u don't want a unlock bootloader or return to what your device was like before.
Go into developer options
Allow OEM unlocking
Reboot to bootloader
Enter "fastboot devices" to check your device is connected
Enter "fastboot oem unlock"
Swipe for yes
Then it will reboot again
continue to the next method
For both fastboot and MSM
Once booted into system, set it up and update to OOS version of your TWRP backup.
Download the full zip using the link in the Download Link section.
Transfer the OOS .zip to internal storage.
Go into settings -> system update -> Update via local upgrade -> find zip file and press install
Do this twice to make sure you have installed that version of OOS in both slots
Boot to bootloader
Boot TWRP
Install TWRP
Reboot recovery
Transfer whole TWRP Folder into internal storage
Restore only boot and data
Swipe to restore
If you have backed up your internal storage folders do this
Reboot to recovery
Transfer all your internal storage folders
Reboot to system and done
Otherwise, just reboot to system. U can update OOS as well if it's outdated. The method is below to update OOS with ROOT. Up to u
RESTORING TWRP BACKUP HAS ISSUES ON THESE ROMs
CrDroid (Method 1 + 2 don't work). Method 3 works (install Gapps if the ROM doesn't have it!)
Restoring a Custom ROM TWRP backup 1
I tried using this method, but it didn't work for me.
You can use this method to switch ROMs too
Boot TWRP Recovery
Flash OOS + Finalize
Boot to bootloader, boot TWRP
Flash TWRP
Reboot Recovery
Transfer twrp backup
Restore System.img, Vendor.img and boot
Boot to system and setup system
Reboot to recovery
Restore data
Reboot system. Done
I had an issue with this method where rebooting system it was from fresh and my data didn't restore. If this happened to you, then do method 2 (Restoring a Custom ROM TWRP Backup 2)
Restoring a Custom ROM TWRP Backup 2
The first method didn't work for me. But this method did
Restore fresh like you're going back to OOS.
Choose one method. Fastboot or MSM method.
I prefer the fastboot method.
Download fastboot ROM using the link in the Download Link section.
Extract/ un-zip
Boot your device into fastboot mode (Either do it with the advanced reboot in developer options or power off device -> boot recovery Vol - + power -> boot to bootloader or power off device -> press Vol Up + Vol down + power)
Click flash-all.bat
Once booted into system, set it up briefly and DO NOT RESTORE ANYTHING.
Boot to bootloader
Boot TWRP
Install TWRP
Reboot recovery
Transfer whole TWRP Folder into internal storage
Restore everything (System.img, vendor.img, boot.img and data)
Swipe to restore. If data couldn't restore then boot system, setup system, boot TWRP and restore data.
Reboot system. The first reboot might go dodgy and it did for me.
Reboot system and transfer all your internal storage stuff
done
If this did not work still. Then do the 3rd method...
Restoring a Custom ROM TWRP backup 3
If the previous 2 methods has failed for you. Then try this.
Restore fresh like you're going back to OOS.
Choose one method. Fastboot or MSM method.
I prefer the fastboot method.
Download fastboot ROM using the link in the Download Link section.
Extract/ un-zip
Boot your device into fastboot mode (Either do it with the advanced reboot in developer options or power off device -> boot recovery Vol - + power -> boot to bootloader or power off device -> press Vol Up + Vol down + power)
Click flash-all.bat
Once booted into system, set it up and update to OOS version of your TWRP backup.
Download the full zip using the link in the Download Link section.
Transfer the OOS .zip to internal storage.
Go into settings -> system update -> Update via local upgrade -> find zip file and press install
Do this twice to make sure you have installed that version of OOS in both slots
Transfer TWRP.zip, Build.zip (Custom ROM zip file) into internal storage.
Boot to bootloader
Boot TWRP
Install TWRP
Reboot to Recovery
Flash Build.zip (Custom ROM zip file)
Flash TWRP
If the ROM doesn't have GApps included do this
Reboot to recovery
Flash Gapps if not included
Format data
Otherwise, just Format data -> reboot to recovery. Up to u
Reboot Recovery
Transfer twrp backup
Restore data
Reboot system. Done
If it still fails, repeat steps 1 to 15. But restore everything and you should be back on your custom ROM like you never left.
Updating OOS and Custom ROM
Update OOS with Root (Magisk)
Always do a TWRP backup before updating your OS in case
Download the full zip file of the latest OOS, transfer the zip file to internal storage NOT IN ANY FOLDER
Download and transfer twrp.zip file to internal storage
Go into settings, system update, update via local upgrade and choose the file
Wait till the installation has finished. If failed TRY AGAIN!
DO NOT REBOOT!
Go into Magisk Manager, modules
Find the twrp zip file and install TWRP
DO NOT REBOOT!
Go into Magisk Home
Press install
Press install via inactive slot
Reboot system and done
You will reboot into the next slot
You don’t have to repeat the installation to install the latest OOS in the other slot. But you should and I use this method many times and has never let me down.
Updating OOS without root
Go to System Update -> find the update install and reboot.
Or download the zip -> transfer to internal storage -> update via local upgrade -> reboot and done
Update a Custom ROM
Method 1
Always do a TWRP backup before updating your OS in case
Use this method just to update the ROM.
Boot recovery
Flash new version + twrp
Reboot recovery
Flash new version + twrp
If the ROM doesn't have GApps included,
The restore script should show up during the installation of the new ROM.zip
BUT if the restore script DIDN'T pop up do this
Reboot to recovery
Flash Gapps if not included
Reboot to system
Otherwise, reboot to system. Up to u
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system. Up to u
Method 2
This method uses finalize.zip
Boot recovery
Flash new version + finalize + twrp
If the ROM doesn't have GApps included,
The restore script should show up during the installation of the new ROM.zip
BUT if the restore script DIDN'T pop up do this
Reboot to recovery
Flash Gapps if not included
Reboot to system
Otherwise, reboot to system. Up to u
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system. Up to u
Updating vendor
Use Method 1 and 2 for ROMs with Gapps. Use Method 3 for ROMs with no Gapps included.
Method 1
If u haven’t updated your Custom ROM and your Vendor… You can use this method to update both or just the vendor.
Boot recovery
Flash OOS + twrp
Reboot recovery
Flash OOS + twrp
Reboot recovery
Flash Custom ROM + twrp
Reboot recovery
Flash Custom ROM + twrp
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system
Method 2
This method uses finalize.zip
Boot recovery
Flash OOS + finalize + twrp
Reboot recovery
Flash Custom ROM + finalize + twrp
Otherwise, reboot to system. Up to u
If you want root do this
Reboot to recovery
Flash Magisk
Reboot to system and done
Otherwise, just reboot to system
Method 3
This method is for ROMs with no Gapps included
You can use this method as well for updating to a vendor that has a NEWER ANDROID version like from OOS 10 to OOS 11 vendor.
Boot recovery
Flash OOS + Custom ROM + twrp
Reboot recovery
Flash OOS + Custom ROM + twrp
If u flashed GApps, the restore script should show up during the installation of the ROM.zip
If the GApps script didn't show up do this
Otherwise, skip step 3
Flash Magisk if u want root, otherwise skip step 2
Reboot to recovery
Flash Magisk
Flash Gapps
Reboot to system and done
Download Links:
SDK Platform Tools (Fastboot Tools) Here
OOS versions for OP6 (under Signed Flashable zips) Here
OOS versions for OP6T (under Signed Flashable zips) Here
TWRP for OP6 Here
TWRP for OP6T Here
Magisk Here
NikGapps Here
Stock Fastboot ROM for OP6 Here
Stock Fastboot ROM for OP6T Here
MSMDownloadTool for OP6 Here
MSMDownloadTool for OP6T Here
TitanumBackup App Here
Migrate App Here
Credits:
@mauronofrio For his amazing work on the TWRP recovery and Stock Fastboot ROMs for OP6/6T
@topjohnwu For his work on Magisk
@Nikgapps For their work on creating Gapps
@Some_Random_Username For his Collection of MSMDownloadTool for OP6/6T
@OPTeam For the collection of OOS zips for OP6/6T
@dreamwhite For the method (Method 3) of updating the vendor which works wonders for ROMs with no GApps included
First
Hey Guys,
Need a some expert advice please.
Long story short. I need to replace my OP 6T McLaren's battery as I have serious degradation in battery capacity (73% Serious Loss), meaning the battery is no longer charging to 3700mAh, max charging atm is around 2600mAh, which it drains very quickly. FYI Anything above 80% is the limit for average performance, >90% is best. You can use the OP Diagnostic App 1.0.0.9 to determine your own status. Does not work on all OP devices above 6 btw. Maybe other versions work. Anyway, will be getting OP to change the battery (no real local guys I can trust tbh, all Sammy & Apple guys...) and they want me to Factory Reset the device (complete wipe including internal storage (backed up already to PC)) before sending the device to the OP Repair Center for the obvious reasons of Privacy & Security.
On my device, I have a suite of apps that are no longer available to install with APK specially Signed, but won't be able to re-install (long story & can discuss in a PM more if there is an interest to help on this). These APK will not work any other way, I've tried! This being said, I know that TWRP Nandroids work well & have been doing these backups for yrs and have restored backups with these apps installed and it works! But I have not had to restore any as of late and TWRP Backup has somewhat changed in regards to the partition selections available. See TWRP Options pic below.
When OP returns the device to me, it will mostly likely be on the latest release of 10.3.11 (Hopefully).
Here is the current setup and runs perfectly!
OOS 10.3.11
TWRP: twrp-3.5.2_9-0-fajita
Magisk 23
The last Nandroid done today (No PW for good measure, but secured locally offline), I selected all partitions. Is this the best way to insure I get my full device backup restored?
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I'm guessing that I will have to, Unlock the Bootloader, reinstall TWRP same version the Nandroid was created with in order to restore that backup.
Looking forward to hearing from you guys to make the best decision before proceed with the factory reset.
Thanking you all in advance for your time & assistance!
Cheers!
plepew said:
Hey Guys,
Need a some expert advice please.
Long story short. I need to replace my OP 6T McLaren's battery as I have serious degradation in battery capacity (73% Serious Loss), meaning the battery is no longer charging to 3700mAh, max charging atm is around 2600mAh, which it drains very quickly. FYI Anything above 80% is the limit for average performance, >90% is best. You can use the OP Diagnostic App 1.0.0.9 to determine your own status. Does not work on all OP devices above 6 btw. Maybe other versions work. Anyway, will be getting OP to change the battery (no real local guys I can trust tbh, all Sammy & Apple guys...) and they want me to Factory Reset the device (complete wipe including internal storage (backed up already to PC)) before sending the device to the OP Repair Center for the obvious reasons of Privacy & Security.
On my device, I have a suite of apps that are no longer available to install with APK specially Signed, but won't be able to re-install (long story & can discuss in a PM more if there is an interest to help on this). These APK will not work any other way, I've tried! This being said, I know that TWRP Nandroids work well & have been doing these backups for yrs and have restored backups with these apps installed and it works! But I have not had to restore any as of late and TWRP Backup has somewhat changed in regards to the partition selections available. See TWRP Options pic below.
When OP returns the device to me, it will mostly likely be on the latest release of 10.3.11 (Hopefully).
Here is the current setup and runs perfectly!
OOS 10.3.11
TWRP: twrp-3.5.2_9-0-fajita
Magisk 23
The last Nandroid done today (No PW for good measure, but secured locally offline), I selected all partitions. Is this the best way to insure I get my full device backup restored?
View attachment 5319753
I'm guessing that I will have to, Unlock the Bootloader, reinstall TWRP same version the Nandroid was created with in order to restore that backup.
Looking forward to hearing from you guys to make the best decision before proceed with the factory reset.
Thanking you all in advance for your time & assistance!
Cheers!
Click to expand...
Click to collapse
Idk if u have read Mauronofrio's XDA thread on TWRP backups. BUT NEVER BACKUP OR RESTORE SYSTEM OR VENDOR! From my guide, you don't need to backup vendor.img or system.img or anything else that's not Boot or Data FOR OOS. Make sure you have everything like a copy of everything folder/file in your internal storage before u wipe it.
BUT because you're going to wipe your device. U should have a copy of everything in case but don't backup system or vendor as they're useless and will crash your system if u restore those!
After you've got your device from repair, follow my method to restore OOS TWRP backup on your device and YOU'LL only NEED TO RESTORE BOOT + DATA. Once you have booted back to your system, everything should be there like you never left, but transfer your internal storage stuff as some apps store files in your internal storage. Once that is done, that should be it and it would be like you've never left
If the TWRP backup restore doesn't work let me know, but from my experience with going back to OOS via my TWRP backup I only backed up and restored boot + data for OOS. Custom ROMs are different but isn't the case for you
Extreme_Ninja2099 said:
Idk if u have read Mauronofrio's XDA thread on TWRP backups. BUT NEVER BACKUP OR RESTORE SYSTEM OR VENDOR! From my guide, you don't need to backup vendor.img or system.img or anything else that's not Boot or Data FOR OOS. Make sure you have everything like a copy of everything folder/file in your internal storage before u wipe it.
BUT because you're going to wipe your device. U should have a copy of everything in case but don't backup system or vendor as they're useless and will crash your system if u restore those!
After you've got your device from repair, follow my method to restore OOS TWRP backup on your device and YOU'LL only NEED TO RESTORE BOOT + DATA. Once you have booted back to your system, everything should be there like you never left, but transfer your internal storage stuff as some apps store files in your internal storage. Once that is done, that should be it and it would be like you've never left
If the TWRP backup restore doesn't work let me know, but from my experience with going back to OOS via my TWRP backup I only backed up and restored boot + data for OOS. Custom ROMs are different but isn't the case for you
Click to expand...
Click to collapse
Wow, thanks for the quick reply!
I have not read Mauronofrio thread and will do!
I completely missed the system & vendor piece in your instructions....my bad!
So just to confirm, my backup that I have done with all checked off is good, but only restore Boot & Data with an exact duplicate of the current Internal Storage...right?
Going forward, when creating the Backup, just select Boot & Data and I'm good to go? Or select all Except: System Image(only) & Vendor options (both)?
Also, just so I can understand a bit better, "System" is the actual OOS? Meaning, if I restore Boot & Data on any OOS, all my apps and data will be as I never left, or we should always restore on the OOS that was current at the moment of the Backup (which I have always done in the past).
PS. I may just do the backup again, just to make sure SYSTEM & VENDOR are not there for good measure!
plepew said:
Wow, thanks for the quick reply!
I have not read Mauronofrio thread and will do!
I completely missed the system & vendor piece in your instructions....my bad!
So just to confirm, my backup that I have done with all checked off is good, but only restore Boot & Data with an exact duplicate of the current Internal Storage...right?
Going forward, when creating the Backup, just select Boot & Data and I'm good to go? Or select all Except: System Image(only) & Vendor options (both)?
Also, just so I can understand a bit better, "System" is the actual OOS? Meaning, if I restore Boot & Data on any OOS, all my apps and data will be as I never left, or we should always restore on the OOS that was current at the moment of the Backup (which I have always done in the past).
PS. I may just do the backup again, just to make sure SYSTEM & VENDOR are not there for good measure!
Click to expand...
Click to collapse
First off, I already posted everything you need in my last comment and that's what I usually do. Everything should be there and not like you need to pay or reply to get the extra stuff that you may need. No point in replying asking for more as I'll just be repeating myself over and over.
Just choose boot & data for TWRP backups for OOS specifically going forward and after you got your device from repair. System, vendor doesn't work in my experience and will crash your system. Only backup the .img variant which was stated by the dev (Mauronofrio) for TWRP for OP6/6T devices. Only backup system.img and vendor.img if u need to backup system+vendor, but YOU don't have to for OOS and I said this previously.
JUST DO A BACKUP OF EVERYTHING OTHER THAN SYSTEM AND VENDOR. YOU SHOULD ONLY BACKUP SYSTEM.IMG AND VENDOR.IMG NEVER SYSTEM OR VENDOR.
They never work and will increase the size of your backup and will take even longer to transfer to your storage device from your phone.
YES, to your new question. You should update/ be on the same OOS version as your TWRP backup before u restore data + boot. Restore OOS via fastboot or msm and update to get to the same version of OOS as your TWRP backup. YOU should only do this if your phone is in the wrong version of OOS as your backup after you've got it back from REPAIR.
ALWAYS BE ON THE SAME VERSION OF OOS AS YOUR TWRP BACKUP BEFORE YOU RESTORE YOUR TWRP BACKUP OF OOS!
Maybe take a copy of your wifi passwords, take a google backup in settings, take a copy of sms/call logs and contacts. Other stuff that you may not have stored just in case the TWRP backup fails, but it shouldn't. Good luck
This should be it and there isn't anything else that you'll need
Extreme_Ninja2099 said:
First off, I already posted everything you need in my last comment and that's what I usually do. Everything should be there and not like you need to pay or reply to get the extra stuff that you may need. No point in replying asking for more as I'll just be repeating myself over and over.
Just choose boot & data for TWRP backups for OOS specifically going forward and after you got your device from repair. System, vendor doesn't work in my experience and will crash your system. Only backup the .img variant which was stated by the dev (Mauronofrio) for TWRP for OP6/6T devices. Only backup system.img and vendor.img if u need to backup system+vendor, but YOU don't have to for OOS and I said this previously.
JUST DO A BACKUP OF EVERYTHING OTHER THAN SYSTEM AND VENDOR. YOU SHOULD ONLY BACKUP SYSTEM.IMG AND VENDOR.IMG NEVER SYSTEM OR VENDOR.
They never work and will increase the size of your backup and will take even longer to transfer to your storage device from your phone.
YES, to your new question. You should update/ be on the same OOS version as your TWRP backup before u restore data + boot. Restore OOS via fastboot or msm and update to get to the same version of OOS as your TWRP backup. YOU should only do this if your phone is in the wrong version of OOS as your backup after you've got it back from REPAIR.
ALWAYS BE ON THE SAME VERSION OF OOS AS YOUR TWRP BACKUP BEFORE YOU RESTORE YOUR TWRP BACKUP OF OOS!
Maybe take a copy of your wifi passwords, take a google backup in settings, take a copy of sms/call logs and contacts. Other stuff that you may not have stored just in case the TWRP backup fails, but it shouldn't. Good luck
This should be it and there isn't anything else that you'll need
Click to expand...
Click to collapse
Thank you!!
Hey guys, for some reason I ended up on "Unmodified System Partitions", must have tapped the screen a few times in error while handling the phone I guess.
What should I do?
Unable to go back to TWRP main menu without selecting an option.
I am rooted, on stock OOS and not doing customs ROM at this time...
What should I do?
Select "Keep Read Only"? or Swipe to "Allow Modifications"?
thanking you guys in advance for you help & guidance!
plepew said:
Hey guys, for some reason I ended up on "Unmodified System Partitions", must have tapped the screen a few times in error while handling the phone I guess.
What should I do?
Unable to go back to TWRP main menu without selecting an option.
I am rooted, on stock OOS and not doing customs ROM at this time...
What should I do?
Select "Keep Read Only"? or Swipe to "Allow Modifications"?
View attachment 5320971
thanking you guys in advance for you help & guidance!
Click to expand...
Click to collapse
Swipe to allow modifications. But it seems that your internal storage corrupted. Not sure what you did and how you got into this situation.
After you swiped to allow modifications... If the internal storage files are a messed up, try to switch slots and reboot recovery
Extreme_Ninja2099 said:
Swipe to allow modifications. But it seems that your internal storage corrupted. Not sure what you did and how you got into this situation.
After you swiped to allow modifications... If the internal storage files are a messed up, try to switch slots and reboot recovery
Click to expand...
Click to collapse
I swiped and yeah, the IS was messed up in File Managfer(TWRP).
Selected Reboot then Selected the Slot I remembered I was on : "A"
Rebooted & Boom all good!
Thank you for the help once again! You rock!!
plepew said:
I swiped and yeah, the IS was messed up in File Managfer(TWRP).
Selected Reboot then Selected the Slot I remembered I was on : "A"
Rebooted & Boom all good!
Thank you for the help once again! You rock!!
Click to expand...
Click to collapse
Cool and at least that was a easy fix
Sorry, I'm a total noob, hopefully this is an easy question to answer. Is there any way that I can tell what version of OOS my TWRP Backup contains? I can't remember what version my phone was running when I did the TWRP backup and don't want to mess it up after I restore the phone from MSM. Thanks in advance for your help!
Sorry, I'm a total noob, hopefully this is an easy question to answer. Is there any way that I can tell what version of OOS my TWRP Backup contains? I can't remember what version my phone was running when I did the TWRP backup and don't want to mess it up after I restore the phone from MSM. Thanks in advance for your help!
jas84701 said:
Sorry, I'm a total noob, hopefully this is an easy question to answer. Is there any way that I can tell what version of OOS my TWRP Backup contains? I can't remember what version my phone was running when I did the TWRP backup and don't want to mess it up after I restore the phone from MSM. Thanks in advance for your help!
Click to expand...
Click to collapse
Well u posted this twice which isn't necessary and people will try and reply. But I'm not sure if there is a way to know and as long as u copied the whole TWRP folder for that backup, u should be fine restoring it with a newer version of TWRP. If it really matters to you, then maybe try and find the latest TWRP on the date you did the backup? I think just using a newer TWRP version should be fine
Should I use the same Gapps package I flashed during clean installing when updating custom rom?
Waynenolan92 said:
Should I use the same Gapps package I flashed during clean installing when updating custom rom?
Click to expand...
Click to collapse
U don't have to use the same gapps package. Using a updated one would be better. But, u only have to for ROMs that don't include gapps (vanilla builds) AND the Restore script doesn't show up during installation. Opengapps doesn't have that script but nikgapps does. Using dirty flash/updating a ROM should show the restore script and if it doesn't then just reboot to recovery and flash the updated or same gapps package. This can also be the same for updating the base/vendor (use method 3 in that section of the guide). I hope this helps
Extreme_Ninja2099 said:
U don't have to use the same gapps package. Using a updated one would be better. But, u only have to for ROMs that don't include gapps (vanilla builds) AND the Restore script doesn't show up during installation. Opengapps doesn't have that script but nikgapps does. Using dirty flash/updating a ROM should show the restore script and if it doesn't then just reboot to recovery and flash the updated or same gapps package. This can also be the same for updating the base/vendor (use method 3 in that section of the guide). I hope this help
Click to expand...
Click to collapse
Thanks for your replay)))it's my first using vanilla rom(without Gapps), so I flashed nikigapps Omni package, and my question is: should I always use the same package, or I can go with core package for example?
Waynenolan92 said:
Thanks for your replay)))it's my first using vanilla rom(without Gapps), so I flashed nikigapps Omni package, and my question is: should I always use the same package, or I can go with core package for example?
Click to expand...
Click to collapse
U can... But it doesn't really matter as a updated package works fine and u only need to use it if the nikgapps restore script doesn't show up when updating the ROM or vendor/base (OOS underneath)
I want to CHANGE custom ROMs (havoc to Lineage OS a11 to a12) I have taken TWRP back up of boot+data+system.img+ vendor.img. once I flash the new a12 Lineage plus Nikapps core plus magisk. What steps to restore data? any response is appreciated in advance. Thank you.

[ROM][SM-T500] Samsung Galaxy Tab A7 10.4 (2020) - LineageOS 18.1

Update: March 24 2022: This ROM has been retired and a new one based on LOS 19.1 (and TWRP based on Android 11) have taken its place. New thread here: https://forum.xda-developers.com/t/...4-2020-lineageos-19-1-and-twrp-3-6-1.4421365/
---
Update 9:46am EST July 15 2021: new builds of TWRP and LineageOS with TWRP touch fixed and LOS w/ space for Gapps is now live.
WARNING: USE AT YOUR OWN RISK.
I have successfully ported TWRP and Lineage OS 18.1 to the Samsung Galaxy Tab A7 10.4 (2020), aka SM-T500. This is my first time porting TWRP or LOS, so there may be issues unknown about at this time. Thus far, the only known issue is that the touchscreen in TWRP does not work. This can be worked around by using a USB mouse and/or accessing the device via ADB.
Here are the steps to follow:
Update your device to the latest stock ROM (as of this writing) either using the built-in system updater or via Odin. You want the build that ends with "3BUF3".
Unlock device bootloader using instructions from other threads. This will wipe your device.
Boot into download mode and flash "vbmeta_disabled_R.tar" via Odin in the "Userdata" slot to disable verified boot. This will wipe your device again.
Boot device back into download mode and flash TWRP via Odin in the "AP" slot. If you boot up into the stock ROM rather than booting directly back into download mode then go through the initial setup process of the stock ROM and enable developer tools and ensure OEM Unlocking is still enabled (VaultKeeper can possibly undo OEM Unlocking if you get to the ROM but don't go into Developer Tools and view OEM Unlocking is enabled, so make sure to do this).
Boot device into TWRP (recovery mode) and format (not wipe) your data partition. Then reboot back into TWRP.
Push LineageOS (super.new.ext4.img) to device. Ideally push it to an SD card formatted with ExFat or EXT2/3/4 (FAT/FAT16/FAT32/VFAT won't work due to file-size limitations).
Install LineageOS image to "Super" partition. Make sure to select "Install from Image" in order to show .img files in the install selector screen.
(Optional) Push NikGapps Omni to your device and install the zip. Make sure you include a "nikgapps.config" file in your "/tmp" folder that is configured to install to "system" rather than "product" or "default".
Reboot to system. You should now be in LOS with Gapps.
(Optional, but recommended): Install Magisk via TWRP
(Optional, but recommended): Run fix script to fix brightness slider not working and to make Magisk work. If you didn't install Magisk but only want the brightness fix, just enter "n" when prompted in the script. To run the script:
NOTE: Script has .txt file extension to allow hosting on AFH. Remove that so it's just .sh to match the instructions below.
Download and push to device when booted into TWRP
adb push sm-t500_fixes.sh /tmp
Enter an adb shell
adb shell
Change directories and set permissions
cd /tmp
chmod +x /tmp/sm-t500_fixes.sh
Run script
/tmp/sm-t500_fixes.sh
Tips:
If you are not seeing all of your storage space in the OS on the internal flash, boot to TWRP and format data.
Flash TWRP via "AP" slot and flash VBMeta_Disabler via "Userdata" slot in Odin.
Flash LineageOS as an Image, not as a Zip.
For Gapps, use the latest NikGapps for ARM64 and Android 11/R.
For Gapps, make sure you install to the System partition and not Product. To do this you need to slightly modify a nikgapps.config file. Instructions on that can be found on the NikGapps site.
Downloads:
LineageOS 18.1 20210615 Beta 2: https://www.androidfilehost.com/?fid=14943124697586369438
TWRP 3.5.2 Beta 3: https://www.androidfilehost.com/?fid=14943124697586369439
vbmeta_disabled_R: https://www.androidfilehost.com/?fid=14943124697586369440
Fixes for brightness and Magisk (sm-t500_fixes.sh): https://www.androidfilehost.com/?fid=14943124697586369521
Known Issues:
OS-encrypted storage (Internal Data) not able to be decrypted in TWRP.
Brightness controls don't work: Fixed via "sm-t500_fixes.sh script.
TWRP touch screen doesn't work (use USB keyboard or adb). Should be fixed with TWRP Beta 3.
TWRP formatting external SD card may hardbrick device. Do not do this! Fixed with TWRP Beta 2.
Source (device tree for TWRP from my Github): https://github.com/agreenbhm/android_device_samsung_gta4lwifi
Source (kernel sources from Samsung): https://opensource.samsung.com/uploadSearch?searchValue=Sm-t500#
agreenbhm said:
I have successfully ported TWRP and Lineage OS 18.1 to the Samsung Galaxy Tab A7 10.4 (2020), aka SM-T500. This is my first time porting TWRP or LOS, so there may be issues unknown about at this time. Thus far, the only known issue is that the touchscreen in TWRP does not work. This can be worked around by using a USB mouse and/or accessing the device via ADB.
Here are the rough steps to follow:
Unlock device bootloader using instructions from other threads.
Patch stock ROM (AP) using Magisk, then flash rooted ROM. Will likely need to wipe device after this.
Boot into rooted ROM and ensure "OEM Unlocking" is still enabled in "Developer Tools".
Boot back into download mode and flash "vbmeta_disabled_R.tar" to disable verified boot.
Boot device back into rooted stock ROM to ensure things are still functional (may require a device wipe at this step).
Boot device into download mode and use ODIN to flash TWRP recovery.tar file via "AP" slot.
Boot device into TWRP to verify functionality (hold Vol-Up + Power during boot).
Access TWRP via adb using "adb shell" or with USB mouse (touch functionality currently not working).
Format data partition on device.
Via ADB shell: twrp format data
Via USB mouse: Wipe -> Advanced -> Format Data
Boot device into download mode.
Via ADB shell: twrp reboot download
Via USB mouse: Reboot -> Download
Flash LineageOS tar file via ODIN using the "AP" slot.
If device boots into TWRP after flashing LineageOS, use USB mouse to select: Reboot -> System
Device should boot and stall for ~1m at the Samsung logo screen with red text below, then should go blank and then display LineageOS boot image.
Downloads:
LineageOS 18.1 20210615 with TWRP 3.5.2: https://mega.nz/file/vMVglThZ#TepIHvdEypezq3z4S_4Lln7FRFVfC7CUjVGq3ByFb6U
TWRP 3.5.2: https://mega.nz/file/GYU1yCCQ#JsthI8BYNtfB08Pzt1eeXta2Lb1zCkUI185Zm88dEW4
vbmeta_disabled_R: https://mega.nz/file/iMFx3CQI#8cP4mPoRaQNwDATqt0vKD8wxqRWSTz1EL79U0fNpW8M
Click to expand...
Click to collapse
Great news!! But I think you need to post it in the ROMs, Kernels, Recover thread.
awesome. Will try after work. Also I think you posted in the wrong section.
Which slot to flash the vbmeta?
wizzdome said:
Which slot to flash the vbmeta?
Click to expand...
Click to collapse
AP
Thanks,
After flashing the vbmeta it booted into recovery automatically after what looked like a bootloop in progress, so I wiped with factory reset and then it rebooted fine. (still not sure exactly what the vbmeta does I was hoping it would make it so i didnt get that stupid pop up asking me to hit power button to continue booting due to it having the patched os) anyhow booted fine and twrp installed as you stated without touch screen but mouse with otg works fine. (great job so far) On to LOS... I think I should have checked oem lock before flashing LOS as when I installed I get stuck at boot screen that says oem lock is on... must have been from my factory reset... (facepalm)
Nope... Still sticking on boot with the following showing on the screen...
RPMB fuse not set
RPMB Provisioned
Current BInary: Custom (0x30f)
FRP Lock : OFF
OEM Lock : ON (U) {this was off verified before flash}
KG Status : Checking
Waranty Void : 0x1 (0xE02)
Quallcomm Secureboot : Enable
RP SWREV : B3 (1,1,1,3,1,1) k3 s3
secure download : enable
grdm status : normal (d0000501)
did : 041ce2d22dba
this is displayed in the corner on the bootscreen and looks like it belongs on the download screen, anyhow booting into twrp from this point works however factory reset fails with unable to mount key(something and key(something else) i figure i will let it sit a while as I know sometimes it just takes first boot a while to go through however it doesnt seem to be the problem. Have you had a positive install of the LOS? I am wondering if I had maybe gotten a bad copy of the file. When i go to install I get a pass in odin so not quite sure where to go from here other than back to the factory image any help to get this going would be great... I took on this task cause i needed someting to take my mind off the severely crappy week I have had... so looking forward to anything you can share here...
Actually, userdata is the slot I always use. It might work in both though.
Something to mention: there is not enough space on the /system partition to flash Gapps. I created a build that supports it (with a resized /system partition) but I couldn't get it to flash via Odin. The only way I got it to work was by flashing it via TWRP as an img file. I will be posting that soon. Unfortunately that will be the end of development for now as I hard-bricked the device and need to wait for a repair or replacement. Should be back developing in 2 weeks.
Nevermind what I said here.
jayzarry84 said:
Anyone get this to work? I just flashed the TWRP part but have not been able to get into TWRP
Click to expand...
Click to collapse
Get adb access in the OS and then run "adb reboot recovery"
agreenbhm said:
Get adb access in the OS and then run "adb reboot recovery"
Click to expand...
Click to collapse
question. I don't have an OTG cable and TWRP keeps booting. I've tried rebbot, rebbot bootloader, reboot system. any advice?
jayzarry84 said:
question. I don't have an OTG cable and TWRP keeps booting. I've tried rebbot, rebbot bootloader, reboot system. any advice?
Click to expand...
Click to collapse
You may need to get an otg cable for a USB mouse and choose "reboot system" from the gui. Alternatively, look at the /dev/block/by-name/misc partition and try blanking that out with dd. That has worked sometimes.
jayzarry84 said:
question. I don't have an OTG cable and TWRP keeps booting. I've tried rebbot, rebbot bootloader, reboot system. any advice?
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Also, from an adb shell, try "twrp reboot". Supposedly that should boot to system, but I feel like in testing I got mixed results. According to the TWRP documentation though that should be the answer.
agreenbhm said:
Also, from an adb shell, try "twrp reboot". Supposedly that should boot to system, but I feel like in testing I got mixed results. According to the TWRP documentation though that should be the answer.
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Not working. I'll wait for my otg cable to come in
jayzarry84 said:
Not working. I'll wait for my otg cable to come in
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I was able to use adb to run the TWRP Format Data command and it rebooted the tablet and now LOS has booted up. I think I'm good!
Looking forward to see how this develops
Rom is fast and snappy. Brightness control does not work. I haven’t played too much because of work but that’s what I’ve found so far
Can a mod move this to the rom release section?
agreenbhm said:
Something to mention: there is not enough space on the /system partition to flash Gapps. I created a build that supports it (with a resized /system partition) but I couldn't get it to flash via Odin. The only way I got it to work was by flashing it via TWRP as an img file. I will be posting that soon. Unfortunately that will be the end of development for now as I hard-bricked the device and need to wait for a repair or replacement. Should be back developing in 2 weeks.
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I've not been able to flash this yet but I know that the latest TWRP versions have a way to fix the system partition to accept gapps. /Wipe/Advanced check system then resize. Sometimes you have to do it more than once if it is a large gapps.
lewmur said:
I've not been able to flash this yet but I know that the latest TWRP versions have a way to fix the system partition to accept gapps. /Wipe/Advanced check system then resize. Sometimes you have to do it more than once if it is a large gapps.
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I will look into that, but I'm not optimistic it will work. This device does not separately present the system partition, rather it uses a super partition which contains system, vendor, product, and odm. TWRP only shows me the super partition for working with. I was able to resize the system partition by expanding the Lineage image and file system on my pc to match the original stock system partition, then rebuilt the super image with the other partitions it needs.

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