Database Develop

Magisk ERROR when installing

Hi, may I ask how do I fix this error? First post on this group
this is the error I got when installing Magisk using TWRP twrp-3.0.2-0-ze500kl
my device is ze500kl firmware WW-13.1010.1612.53
Updating partision details...
...done
Full Selinux support is present.
MTP Enabled
Installing ZIP file '/sdcard/Magiskmanager/magisk-v13.3.zip
Checking for MD5 file...
Skipping MD5 Check: no MD5 file found
*****************************
*Magisk v13.3 Installer
*****************************
-Mounting /System, /Vendor, /cache, /data
-Device platform: arm64
-Constructing environment
-/data/magisk.img detected!
-Mounting /data/magisk.img to /magisk
-Found Boot Image: /dev/block/mmclk0p34
-Unpacking boot image
-Checking ramdisk status
! Boot image patched by other programs!
! Please restore stock boot image
Updater process ended with ERROR:1
Error installing zip file '/sdcard/MagiskManager/Magisk-v13.3.zip'
Updating partition details...
...done

knorcube71 said:
Hi, may I ask how do I fix this error? First post on this group
this is the error I got when installing Magisk using TWRP twrp-3.0.2-0-ze500kl
my device is ze500kl firmware WW-13.1010.1612.53
Updating partision details...
...done
Full Selinux support is present.
MTP Enabled
Installing ZIP file '/sdcard/Magiskmanager/magisk-v13.3.zip
Checking for MD5 file...
Skipping MD5 Check: no MD5 file found
*****************************
*Magisk v13.3 Installer
*****************************
-Mounting /System, /Vendor, /cache, /data
-Device platform: arm64
-Constructing environment
-/data/magisk.img detected!
-Mounting /data/magisk.img to /magisk
-Found Boot Image: /dev/block/mmclk0p34
-Unpacking boot image
-Checking ramdisk status
! Boot image patched by other programs!
! Please restore stock boot image
Updater process ended with ERROR:1
Error installing zip file '/sdcard/MagiskManager/Magisk-v13.3.zip'
Updating partition details...
...done
Click to expand...
Click to collapse
Hello. Use the magisk_uninstaller.zip first. From what I saw in your log, your boot.img is already patch by something else. You need to install magisk on your stock boot.img
Envoyé de mon SM-N935S en utilisant Tapatalk

https://forum.xda-developers.com/apps/magisk/guide-magisk-troubleshooting-t3641417

Is there a way I can install Magisk without stock boot image? I installed a custom ROM that installs SuperSU and I want to uninstall SuperSU and install Magisk.

keeganjk said:
Is there a way I can install Magisk without stock boot image? I installed a custom ROM that installs SuperSU and I want to uninstall SuperSU and install Magisk.
Click to expand...
Click to collapse
You'll probably be able to find an untouched boot image inside the ROM zip. I believe I've written about this in the link I shared above...

Didgeridoohan said:
You'll probably be able to find an untouched boot image inside the ROM zip. I believe I've written about this in the link I shared above...
Click to expand...
Click to collapse
Could you elaborate on that?
---------- Post added at 12:16 AM ---------- Previous post was at 12:05 AM ----------
Didgeridoohan said:
You'll probably be able to find an untouched boot image inside the ROM zip. I believe I've written about this in the link I shared above...
Click to expand...
Click to collapse
I want to keep my custom Rom installed

keeganjk said:
Could you elaborate on that?
I want to keep my custom Rom installed
Click to expand...
Click to collapse
I already have, in the link provided above... Look under "Moving from another systemless root solution to MagiskSU".

I have been using FreedomOS on my OnePlus 5. I try to install Burgerhunter over it with OOS. The nethunter zip installs SuperSU and downgrades Magisk to v2.82 or something like that, so after the install I select "switch superuser app" and it removes SuperSU. However, once it reboots, I try to download and install the Magisk upgrade, but results in an error.

keeganjk said:
I have been using FreedomOS on my OnePlus 5. I try to install Burgerhunter over it with OOS. The nethunter zip installs SuperSU and downgrades Magisk to v2.82 or something like that, so after the install I select "switch superuser app" and it removes SuperSU. However, once it reboots, I try to download and install the Magisk upgrade, but results in an error.
Click to expand...
Click to collapse
The option you want to use in the SuperSU app is "complete unroot". (Or something like that. Haven't used SuperSU in a long time).

Didgeridoohan said:
The option you want to use in the SuperSU app is "complete unroot". (Or something like that. Haven't used SuperSU in a long time).
Click to expand...
Click to collapse
I'll try that when I get a chance...
---------- Post added at 04:12 PM ---------- Previous post was at 03:26 PM ----------
Didgeridoohan said:
The option you want to use in the SuperSU app is "complete unroot". (Or something like that. Haven't used SuperSU in a long time).
Click to expand...
Click to collapse
It didn't work; terminal crashes when I try to open it.

Flash Magisk V11.1
I was in the same situation and saw this in another forum...works pretty well...

benyou54 said:
Hello. Use the magisk_uninstaller.zip first. From what I saw in your log, your boot.img is already patch by something else. You need to install magisk on your stock boot.img
Envoyé de mon SM-N935S en utilisant Tapatalk
Click to expand...
Click to collapse
I already did what you say, but now I get the error :
*****************************
*Magisk Unnstaller
*****************************
-Mounting /System, /Vendor, /cache, /data
-Device platform: arm64
-Constructing environment
-/data/magisk.img detected!
-Mounting /data/magisk.img to /magisk
-Found Boot Image: /dev/block/mmclk0p34
-Unpacking boot image
-Checking ramdisk status
! Boot image patched by other programs!
! Please restore stock boot image
Updater process ended with ERROR:1
Error installing zip file '/sdcard/MagiskManager/Magisk-uninstaller-20170928.zip'
Updating partition details...
...done

Adicct0 said:
I already did what you say, but now I get the error :
*****************************
*Magisk Unnstaller
*****************************
-Mounting /System, /Vendor, /cache, /data
-Device platform: arm64
-Constructing environment
-/data/magisk.img detected!
-Mounting /data/magisk.img to /magisk
-Found Boot Image: /dev/block/mmclk0p34
-Unpacking boot image
-Checking ramdisk status
! Boot image patched by other programs!
! Please restore stock boot image
Updater process ended with ERROR:1
Error installing zip file '/sdcard/MagiskManager/Magisk-uninstaller-20170928.zip'
Updating partition details...
...done
Click to expand...
Click to collapse
So restore your original (stock or custom) boot.img with odin by creating a tar file flashing in the AP case of odin [emoji6]
Envoyé de mon SM-N950F en utilisant Tapatalk

can you please explain the process with corresponding download links. Even i faced the same error at both the cases. And am using AOSP 8.1 for redmi note 4.

Me too help
Exact same error

keeganjk said:
Is there a way I can install Magisk without stock boot image? I installed a custom ROM that installs SuperSU and I want to uninstall SuperSU and install Magisk.
Click to expand...
Click to collapse
No. you will need a stock boot image to install magisk because since Super SU replaces demon with SUdemon and the Magiskdemon is not scripted to patch any other superuser scripts other than that in stock boot image

I want to install magisk app in samsung galaxy grand neo plus . And want to remove it. I tried to install magisk app by twrp but due to " updater process ended with error 1 " it not install . Please help me to install magisk

[email protected] said:
I want to install magisk app in samsung galaxy grand neo plus . And want to remove it. I tried to install magisk app by twrp but due to " updater process ended with error 1 " it not install . Please help me to install magisk
Click to expand...
Click to collapse
Recovery log needed...
https://www.didgeridoohan.com/magisk/Magisk#hn_Asking_for_help

Didgeridoohan said:
Recovery log needed...
https://www.didgeridoohan.com/magisk/Magisk#hn_Asking_for_help
Click to expand...
Click to collapse
I had the same error solve with f2fs-loopback-bug-workaround-2018.1.24.zip

rosel11078 said:
I had the same error solve with f2fs-loopback-bug-workaround-2018.1.24.zip
Click to expand...
Click to collapse
The f2fs issue is certainly a possibility, but "error 1" can mean just about anything. So without a log it's impossible to know for sure...

Error installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'

Good evening from Spain.
I tried to flash Magisk onto my SM-J530F (Samsung Galaxy J5 2017) but not successfully.
Here's the log:
Updating partition details...
...done
Full SELinux support is present.
MTP Enabled.
Installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'
Checking for Digest file...
Skipping Digest check: no Digest file found
********************
* Magisk v16.0 Installer
********************
- Mounting /system, /vendor
- Found boot/ramdisk image: /dev/block/mmcblk0p10
- Device platform: arm
- Constructing environment
- Unpacking boot image
- Checking ramdisk status
! Boot image patched by other programs.
! Please restore stock boot image
- Unmounting partitions
Updater process ended with ERROR: 1
Error installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'
Updating partition details...
Failed to mount '/system' (Device or resource busy)
...done
Consider that I did the following:
- Flashed stock rom (J530FXXU2ARB3_J530FPHE2ARB3_PHE.zip content)
- Flashed "CF-Auto-Root-j5y17lte-j5y17ltexx-smj530f.tar" in Download mode via Odin, to root and install SuperSU, since it's needed
for flashing TWRP to avoid any bootloop.
- Flashed TWRP.
- Since I already have TWRP, I tried to uninstall SuperSU from the very app, in Options > Full unroot but gave "Uninstallation error", so then I tried to uninstall SuperSU by flashing "UPDATE-unSU.zip" on TWRP.
- Once that is done, I tried to flash "Magisk-v16.0.zip" and it throwed the log I've above mentioned.
- Since it says: "! Boot image patched by other programs.
! Please restore stock boot image", I rebooted it onto Download Mode, and flashed ONLY the BL (bootloader/boot) slot. Came back to TWRP, I flashed again "Magisk-v16.0.zip" but still have the same problem.
Hope there's any solution to install Magisk onto my SM-J530F. Thank you.

Your issue is that the boot image still is patched by SuperSU. Until you restore the stock boot image you won't be able to install Magisk.
https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs
Edit: I don't do Samsung, but from what I remember, you might need to flash AP (or something like that).

Didgeridoohan said:
Your issue is that the boot image still is patched by SuperSU. Until you restore the stock boot image you won't be able to install Magisk.
https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs
Edit: I don't do Samsung, but from what I remember, you might need to flash AP (or something like that).
Click to expand...
Click to collapse
Well, something changed!!!
The problem related with the boot image is solved but I still have the " Failed to mount '/system' "
Updating partition details...
...done
Full SELinux support is present.
MTP Enabled.
Installing zip file '/sdcard/MAGISK/Magisk-v16.0.zip'
Checking for Digest file...
Skipping Digest check: no Digest file found
********************
* Magisk v16.0 Installer
********************
- Mounting /system, /vendor
- Found boot/ramdisk image: /dev/block/mmcblk0p10
- Device platform: arm
- Constructing environment
- Unpacking boot image
- Checking ramdisk status
- Stock boot image detected
- Backing up stock boot image
- Patching ramdisk
- Repacking boot image
- Flashing new boot image
- Unmounting partitions
- Done
Updating partition details...
Failed to mount '/system' (Device or resource busy)
...done
Thank you very much.
EDIT: Despite this problem: "Failed to mount '/system' (Device or resource busy)", your solution was correct! Now I have Magisk correctly installed.
Thank you

Nice to hear it worked. Just for the record, the "Failed to mount /system" message is a TWRP thingy. The Magisk installation is done at the "-Done" line.

Hi, I have the same problem of error 1 while trying to install Magisk from TWRP.
I looked everywere and they say that it is related to a boot image that have to be reinstalled. I did that and no luck, I tryed with boot.img, no working, I even restored ALL the ROM Stock from Samsung ( AP, BL, CP and CSC) and it is not working. I dont know what to do anyware...
Regeet the time was easy to root Samsung with CF autoRoot,
I tried that and ask me to restore all thephone, so still no root??
Some can help please??
Thx

saoudien07 said:
Hi, I have the same problem of error 1 while trying to install Magisk from TWRP.
I looked everywere and they say that it is related to a boot image that have to be reinstalled. I did that and no luck, I tryed with boot.img, no working, I even restored ALL the ROM Stock from Samsung ( AP, BL, CP and CSC) and it is not working. I dont know what to do anyware...
Regeet the time was easy to root Samsung with CF autoRoot,
I tried that and ask me to restore all thephone, so still no root??
Some can help please??
Thx
Click to expand...
Click to collapse
Provide a recovery log or it's going to be impossible to say what the issue is...

Didgeridoohan said:
Provide a recovery log or it's going to be impossible to say what the issue is...
Click to expand...
Click to collapse
Thx for the reply, I am trying to open the content and upload the report here, but no luck. how can I open the log??? can not get a program to do so .......

saoudien07 said:
Thx for the reply, I am trying to open the content and upload the report here, but no luck. how can I open the log??? can not get a program to do so .......
Click to expand...
Click to collapse
The log is just a text file. Did you check the link I posted? In TWRP: Advanced - Copy log, and then post the resulting file.

Didgeridoohan said:
The log is just a text file. Did you check the link I posted? In TWRP: Advanced - Copy log, and then post the resulting file.
Click to expand...
Click to collapse
I got a file "recovery.log" thats why I can not open it, maybe change the extention to "txt" ???

saoudien07 said:
I got a file "recovery.log" thats why I can not open it, maybe change the extention to "txt" ???
Click to expand...
Click to collapse
That would work, but you should be able to open it directly with pretty much any text editor as well. If you're going to post the log text directly, please at least use HIDE tags...

So here what I just did:
I wanted to do a last try to get that error 1 msg and get the repport directly to publicate it here...
So I decide to go to a clean basis. So,
1- Install all the stock ROM with odin. I choose the Home_CSC
Was another just CSC without Home, dont know exactly which one I had to choose, I choose Home_CSC.
2- Turn the fone off
3- Turn it back to download mode
4- Install the TWRP recovery, and I did not reboot.
5- Turn off the fone.
6- Turn on to recovery mode.
7- Format the data (yes)
8- Reboot to Recovery mode.
9- Install Magisk!
AT MY BIG SURPRISE I DID NOT GET ANY ERROR MSG!!! The installation finished without error!
So I continued...
10- install No verity
11- install SuperUS 2.82
13- Reboot the phone.
I was thinking that the root was ok, now I have a new pb. When I tryed to verify with Root Checker, it says no root. When I entered the app, it said BINARY OCCUPIED.
So any suggestion?

saoudien07 said:
9- Install Magisk!
...
11- install SuperUS 2.82
Click to expand...
Click to collapse
Say what...? You've misunderstood something, somewhere. Use Magisk OR SuperSU. Magisk is it's own root solution...
Are you by any chance using some old and outdates guides? Previously you could use SuperSU with Magisk, but that has not been the case since v13.0, well over a year ago, and MagiskSU has been around since v11.0, introduced a year and a half ago.

Didgeridoohan said:
Say what...? You've misunderstood something, somewhere. Use Magisk OR SuperSU. Magisk is it's own root solution...
Are you by any chance using some old and outdates guides? Previously you could use SuperSU with Magisk, but that has not been the case since v13.0, well over a year ago, and MagiskSU has been around since v11.0, introduced a year and a half ago.
Click to expand...
Click to collapse
You guessed right, I am not using a so old tuto, it says it is for oreo...
So I have to use or Magisk or SuperSU,right?
The thing is that i thought SuperSu is to install the SuperSU app, I did notknow that it root also the phone...
I am kind of newby to Android world, u figured it already...
So what are insterest of using Magisk or no-verity??
---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------
Didgeridoohan said:
Say what...? You've misunderstood something, somewhere. Use Magisk OR SuperSU. Magisk is it's own root solution...
Are you by any chance using some old and outdates guides? Previously you could use SuperSU with Magisk, but that has not been the case since v13.0, well over a year ago, and MagiskSU has been around since v11.0, introduced a year and a half ago.
Click to expand...
Click to collapse
Can I put a link to the tuto here??
For you guys to have a lock at it?

saoudien07 said:
You guessed right, I am not using a so old tuto, it says it is for oreo...
So I have to use or Magisk or SuperSU,right?
The thing is that i thought SuperSu is to install the SuperSU app, I did notknow that it root also the phone...
I am kind of newby to Android world, u figured it already...
So what are insterest of using Magisk or no-verity??
---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------
Can I put a link to the tuto here??
For you guys to have a lock at it?
Click to expand...
Click to collapse
The root management app for Magisk/MagiskSU is the Magisk Manager. SuperSU and it's accompanying app is a whole different root solution (that has been sold by @Chainfire and seemingly abandoned by it's new owners).
Magisk usually takes care of dm-verity itself, so there shouldn't be any need for an extra no-verity zip. Sometimes it is needed, but I would skip it until you've tried using Magisk only. If you don't know, dm-verity is used by Android to determine if your device has been tampered with. If you wan't to root your device (tampering), you usually have to disable dm-verity or the device won't boot at all.
If you want root with Magisk, do your list again, but skip step 10 and 11. If it doesn't boot after that, go back to TWRP and flash the no-verity zip.

Didgeridoohan said:
The root management app for Magisk/MagiskSU is the Magisk Manager. SuperSU and it's accompanying app is a whole different root solution (that has been sold by @Chainfire and seemingly abandoned by it's new owners).
Magisk usually takes care of dm-verity itself, so there shouldn't be any need for an extra no-verity zip. Sometimes it is needed, but I would skip it until you've tried using Magisk only. If you don't know, dm-verity is used by Android to determine if your device has been tampered with. If you wan't to root your device (tampering), you usually have to disable dm-verity or the device won't boot at all.
If you want root with Magisk, do your list again, but skip step 10 and 11. If it doesn't boot after that, go back to TWRP and flash the no-verity zip.
Click to expand...
Click to collapse
I just repeated all the procedure, this time just with Magisk, like you said. its installation finished without any error.
I just tryed ROOT Checker, any I finally have the root on my fone!! Thanx you very much for the support, and the explanation.
Can I use Backup/Restoration with TWRP knowing that I rooted with Magisk??

saoudien07 said:
I just repeated all the procedure, this time just with Magisk, like you said. its installation finished without any error.
I just tryed ROOT Checker, any I finally have the root on my fone!! Thanx you very much for the support, and the explanation.
Can I use Backup/Restoration with TWRP knowing that I rooted with Magisk??
Click to expand...
Click to collapse
Great to hear! :good:
You can use TWRP without any issues. Magisk has no impact on it and TWRP has it's own su.

Didgeridoohan said:
Great to hear! :good:
You can use TWRP without any issues. Magisk has no impact on it and TWRP has it's own su.
Click to expand...
Click to collapse
Thx you one more time. Going to install some of my app and configure my new fone then do a backup, for a clean restoration in some months...

I have a problem for the Backup with TWRP. When I want to do a Backup, I get this msg:
failed to mount /data (Invalid argument)
I ve looked on google to fix it, the solution I found is to change data to ext2, then back to ext4.
The pb is that it is removing everything from my phone?
Anyone is having the same issue??

Didgeridoohan said:
Your issue is that the boot image still is patched by SuperSU. Until you restore the stock boot image you won't be able to install Magisk.
https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs
Edit: I don't do Samsung, but from what I remember, you might need to flash AP (or something like that).
Click to expand...
Click to collapse
Hi, i am rooting samsung a5 a520w. I am following the steps in the instructions (https://forum.xda-developers.com/sa...w-to/guide-root-install-twrp-samsung-t3747535).
Now I met a problem like this:
! Boot image patched by other programs!
! Please restore stock boot image
Updater process ended with ERROR:1
Error installing zip file '/sdcard/MagiskManager/Magisk-v17.1.zip'
I have no idea where is the boot.img located. All documents in the external card is:
RMM-State_Bypass;
no-verity-opt-encrypt-6.0;
Magisk_17.1

@imcn001 Your answer is in the link from the post you quoted.

Magisk Install Error - insufficient Partition Size

Hello. I'm attempting to install magisk on a Samsung Galaxy Tab 4 10.1 (SM-T530NU). Base android has been replaced with crDroid (crDroid-7.1.1-20170312-v2.3).
When I go to flash the magisk .zip via TWRP the log reads:
...
-Flashing new boot image
! Insufficient partition size
- Unmounting partitions
Updater process ended with ERROR: 1
Error installing zip file '/sdcard/download/Magisk-v17.1(17100)'
Updating partition details...
...done.
I have tried the following:
made sure to have the latest zip from Magisk Manager
removed previous partial installs of Magisk by using the flashable remover
unrooted supersu (which I'm also no longer able to flash now, systemless or not, to reestablish root and try other methods--it sticks on the boot screen)
reflashed base crDroid
pulling Magisk 17.3 separately from Manager and using that to flash
I haven't found any resources on whether the 'insufficient partition size' problem is with TWRP or the Magisk flashing process so I haven't found anything to try specifically to fix that.
The last thing I have to try is making the flashable boot image and fastbooting it.
Linked here is an image of the TWRP output: imgur . com/a/CATYid4
Thanks

did you manage to fix this

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...

Magisk 20.4 failed to install through TWRP 3.3.1-0 on Samsung Galaxy S7

My phone has the TWRP custom recovery and ive attempted to install magisk on my Samsung Galaxy S7 device but it came up with an error and failed to install. I cant send links yet but this is what it said:
Installing zip file '/sdcard/Magisk-v20.4.zip'
Checking for Digest file...
***********************
Magisk 20,l.4 Installer
***********************
- Mounting /system
- Target image: /dev/block/sda5
- Device platform: arm64
- Constructing environment
- Unpacking boot image
- Checking ramdisk status
! Boot image patched by unsupported programs
! Please restore back to stock boot image
- Unmounting partitions
Updater process ended with ERROR: 1
Error installing zip file '/sdcard/Magisk-v20.4.zip'
Updating partition details...
...done
Anyone got any ideas on how to help? I am pretty new to this so its likely ive missed a step somewhere but this is my 3rd time trying and ive made sure ive followed every step

https://www.didgeridoohan.com/magisk/Magisk#hn_Boot_image_patched_by_other_programs

U must flash the zip ". no-verity-opt-encrypt-6.0.zip" and then flash zip magisk