Database Develop

How to Install 4.2 images, keep root and all data

**Disclaimer** If you don't understand what follows, don't attempt this. I'm not responsible for you softbricking your device,
This is a quick guide for how to install the new android without losing anything. You'll need fastboot for this. Also, before doing this, be sure to download the supersu cwm update zip, and have it on your sdcard. Make sure you also already have a custom recovery installed (I did twrp, but i'm sure cwm will work just as well). I would also suggest having a backup done, through titanium backup and through recovery, just incase.
First, download the factory images for the n7 from google's website. Decompress them (if you're in windows, you'll need winrar or something similar.) After you decompress the archive, there'll be another one inside (image-nakasi-jop40c.zip), decompress this one as well. Under here, you'll see the .img files for all the partitions. For now, go up one directory. You'll also see here bootloader-grouper-4.13.img. Once you have all this, reboot into the bootloader.
Once you're in the bootloader, you can update the bootloader to the new version (this step isn't needed, but I did it anyways). Plug into your pc, and type fastboot devices. Make sure it's not blank. If it is, you have to update drivers. If you can see the device, open up a command prompt, and cd to the directory that has the bootloader-grouper file. Type the following:
fastboot flash bootloader-grouper-4.13.img
then, after it's done, type:
fastboot reboot-bootloader
Now, you'll be booted back into the bootloader, it'll say 4.13. On to the rom.
cd into the folder image-nakasi-jop40c (make sure you see the files system.img and boot.img before you continue. If you don't see them, the next steps will do nothing but erase your kernel and system parition.)
now, you see the image files. Type the following (still in the bootloader)
fastboot erase system
fastboot flash system system.img
wait until it completes, then type:
fastboot erase boot
fastboot flash boot boot.img
Once this is done, hit the volume up on the device until it shows recovery mode on the top. When it does, push the power key and you'll boot into your recovery (shouldn't be touched.) Inside here, flash the supersu cwm zip file, which'll flash the superuser binary, and supersu. Once this is done, do a factory reset (removing your data and cache.) Boot into the rom.
Once it's booted, you'll notice your internal sd card appears to be empty (mine did, I was worried at first.) For some odd reason, it moved the entire contents of my sdcard into a folder on it called 0. When you get back into android, simply move the folder all up one level so they're in the proper place. You now have the rom booted, rooted, with all your data. Now, you can do a titanium restore to get all your stuff back.
My first boot got stuck for some reason. if it happens to you, just hold the power button and hard reboot. (I did this on 2 devices, it only happened to one of them, so I figured I'd give you all warning.)
Links:
SuperSu binary: https://docs.google.com/open?id=0B7a8xHNJlpgTR0ZkR1pWZWR2VzA
Google Factory Images: https://developers.google.com/android/nexus/images

Thanks for this.
I flashed the 4.2 ota in the dev section and I lost root. Can I just flash the supersu binary in cwm to regain root?

Thanks for this.. Apparently you found out too a clean 4.2 isn't rootable via typical methods.
That SuperSU package did the trick. I have to remember to keep a SuperSU binary on hand for these kinds of situations that SuperUser fails..

jefferson9 said:
Thanks for this.
I flashed the 4.2 ota in the dev section and I lost root. Can I just flash the supersu binary in cwm to regain root?
Click to expand...
Click to collapse
Yes. If you do it though cwm, you're not using any exploits, you're just inserting the superuser binary and supersu.apk into the proper places on the rom. On any nexus device, any rom, this will root it.

mstrk242 said:
Once it's booted, you'll notice your internal sd card appears to be empty (mine did, I was worried at first.) For some odd reason, it moved the entire contents of my sdcard into a folder on it called 0. When you get back into android, simply move the folder all up one level so they're in the proper place.
Click to expand...
Click to collapse
DANGER WILL ROBINSON!!
The "odd reason" is called "multiple users" - add a second user and they get a folder called 10.

tehSmoogs said:
DANGER WILL ROBINSON!!
The "odd reason" is called "multiple users" - add a second user and they get a folder called 10.
Click to expand...
Click to collapse
Exactly.
If everything goes right we should have an AOSP prerooted build in about *looks at watch* 20 minutes.... Unless there is a compile error or SU error. *laff*
Back to watching the scrolling terminal window

Just got this working on a mac...
did not update bootloader(couldnt get it to)
other than that, same commands except all fastboots are ./fastboot on a mac
the only other trick is i needed the fastboot and abd files in the jop40c folder...seems to have worked like a charm....im deff on 4.2 with su installed... and it looks like my data is still there...once google is done restoring i'll know just how sucessfull it is, but so far, seems to work!!!

kwhee07 said:
Just got this working on a mac...
did not update bootloader(couldnt get it to)
other than that, same commands except all fastboots are ./fastboot on a mac
the only other trick is i needed the fastboot and abd files in the jop40c folder...seems to have worked like a charm....im deff on 4.2 with su installed... and it looks like my data is still there...once google is done restoring i'll know just how sucessfull it is, but so far, seems to work!!!
Click to expand...
Click to collapse
I did this all on linux, just kind of adapted the guide for windows. I figured all the linux users would understand how to do it on their own. Glad to know it's the same for mac as well.

OK where did they put the developer options? Not in settings on my 32GB 4.2 device
Never mind. This: http://www.androidpolice.com/2012/1...hidden-in-android-4-2-heres-how-to-find-them/

rootbrain said:
OK where did they put the developer options? Not in settings on my 32GB 4.2 device
Never mind. This: http://www.androidpolice.com/2012/1...hidden-in-android-4-2-heres-how-to-find-them/
Click to expand...
Click to collapse
Settings - about tablet - build number
push it a few times and it will enable dev options

You have .bat file in the package.

Why so complicated?
I downloaded 4.2 from here:
http://android.clients.google.com/p...gned-nakasi-JOP40C-from-JZO54K.094f6629.zipia
I then just flashed it from recovery via CWM.
Done.
CWM asked me if I wanted to maintain root and of course I chose the correct answer on this, so now my N7 is running on a rooted 4.2.

Here is my method:
1. Download official 4.1.2 from http://forum.xda-developers.com/showthread.php?t=1929270 and 4.2 OTA image from http://forum.xda-developers.com/showthread.php?t=1989188
2. Boot into CWM (i have CWM touch installed)
3. Clear data and install 4.1.2, don't forget to turn on root in the installer
4. reboot check that root is fully working
5. reboot into recovery install 4.2
6. before reboot CWM will ask to disable recovery flash and protect root. Ansver yes to both questions

I'm confused, it says if you are already on a custom rom, just flash as usual.
What makes this different?

I was on stock ROM rooted with some system modifications, and this wwadd the only way I could get the update working...
Sent from my Nexus 7 using xda app-developers app

mstrk242 said:
For some odd reason, it moved the entire contents of my sdcard into a folder on it called 0. When you get back into android, simply move the folder all up one level so they're in the proper place. You now have the rom booted, rooted, with all your data. Now, you can do a titanium restore to get all your stuff back.
Click to expand...
Click to collapse
So I'm at the step listed above. I have 4.2 on my device but I can't seem to find this "0" folder. I'm browsing the /sdcard folder via adb shell. Am I looking at the wrong place? Do I have have the incorrect permissions? Or might it not be there?
Thanks.

Ill have to wait until a rooted rom is created, I have no comp.
Sent from my Nexus 7 using XDA Premium HD app

can I install image-nakasi-jop40c.zip directly without upgrading bootloader?

Zuk. said:
So I'm at the step listed above. I have 4.2 on my device but I can't seem to find this "0" folder. I'm browsing the /sdcard folder via adb shell. Am I looking at the wrong place? Do I have have the incorrect permissions? Or might it not be there?
Thanks.
Click to expand...
Click to collapse
Not advisable to move this folder - if it got moved to a new location by the o/s then there's probably a good reason why - maybe like 4.2 introducing multiple users
Each user appears to get their own "home" directory created in /mnt/shell/emulated/
Default user dir is "0"
Second user dir is "10"
Each contain the standard dir's from 4.1 and earlier.

Travelawyer said:
Why so complicated?
I downloaded 4.2 from here:
http://android.clients.google.com/p...signed-nakasi-JOP40C-from-JZO54K.094f6629.zip
I then just flashed it from recovery via CWM.
Done.
CWM asked me if I wanted to maintain root and of course I chose the correct answer on this, so now my N7 is running on a rooted 4.2.
Click to expand...
Click to collapse
You had two extra characters at the end of your link, but I fixed it above and it's good to go for others in the future. Just flashed it in TWRP, it didn't ask if I wanted to maintain root, hit reboot when it was complete and lost root, so it doesn't work for everyone - good news is that all my data remained intact without having to resort to advanced restoring my data from a backup....
When I tried the SuperSU binary root flash trick, I finally got root back. But don't think it's as easy to get to recovery! I had to obtain the TWRP Recovery one more time since it wiped it and put in place a recovery that did absolutely nothing but reboot the device after a few minutes, so you'll have to
Code:
fastboot flash recovery openrecovery-twrp-2.3.1.1-grouper.img
to get TWRP back.... Hope that helped everyone!

[ROOT][CWM] Root Nexus 4 & Install Official ClockworkMod Recovery

I originally posted this method at AddictiveTips. The method I posted there is targeted at everyone including the absolute beginners and I have also included instructions there for setting up the required tools, and for reverting back to the original recovery and boot image in case anything goes wrong. All external credits should be given to that guide (it does link back to this thread). Here is the link: How To Root Nexus 4 and Install ClockworkMod Recovery on it.
To my knowledge, this is the first confirmed working rooting method for Nexus 4 posted here at XDA. Though my knowledge is limited, so please correct me if I am wrong.
UPDATE: There is an official ClockworkMod recovery for Nexus 4 now available directly by Koush, so this should all be easy as pie now and you can now safely install CWM too. I am updating the CWM method with the updated instructions.
This method requires an unlocked bootloader. You can find instructions for unlocking it at XDA, or at the AddictiveTips guide linked above (the link to the bootloader unlock guide is in the requirements section there).
UPDATE 2: If your device does NOT get wiped after unlocking the bootloader, fret not. While this isn't expected behavior, several users have experienced the same on the Nexus 4. This could be due to some error at Google's end, but unlocking still works perfectly fine.
That said, let's get on with rooting and flashing CWM.
ClockworkMod Recovery Method:
Download the latest official ClockworkMod recovery from CWM website and rename it to recovery.img
Enable Android Debugging from Settings > Developer Options. (If you can't find developer options, go to 'About' and tap 'Build number' seven times.)
Connect the device to your computer via USB, and install the required drivers.
Download the recovery flashable SuperSU package with Busybox and transfer it to your phone's internal SD card.
Reboot into fastboot/bootloader:
Code:
adb reboot bootloader
You can also power off the phone and then use power + volume-down key combination to get into bootloader.
Unlock the bootloader if you haven't done so already. WARNING: This command will wipe all data on your device.
Code:
fastboot oem unlock
Enter this command in a command prompt to flash the ClockworkMod recovery (making sure you are in the directory where you downloaded the recovery file):
Code:
fastboot flash recovery recovery.img
OR
If you simply want to root without flashing a custom recovery and want to stick to your stock recovery, simply boot this recovery once using this command:
Code:
fastboot boot recovery.img
If you flashed the recovery in the previous step, you can now boot into recovery by pressing volume-up or volume-down twice to select the recovery option, and then the power button to enter it. If you simply booted into the recovery file without flashing it in the previous step, you should already be in recovery now.
Once in recovery, take a backup to be on the safe side.
Flash the downloaded SuperSU and busybox package zip file from recovery.
Clear cache and dalvik cache just in case (not required but won't hurt).
Reboot the device.
ADB and Insecure Boot Image Method:
Grab the insecure boot image from this thread.
Also download these root files. This package includes the latest SuperSU 0.98, latest su binary that comes with it, and working busybox (not sure if latest).
Extract the contents of the downloaded zip file to your computer.
Enable Android Debugging from Settings > Developer Options. (If you can't find developer options, go to 'About' and tap 'Build number' seven times.)
Connect the device to your computer via USB, and install the required drivers.
Reboot into fastboot/bootloader:
Code:
adb reboot bootloader
You can also power off the phone and then use power + volume-down key combination to get into bootloader.
Unlock the bootloader if you haven't done so already. WARNING: This command will wipe all data on your device.
Code:
fastboot oem unlock
Get back into bootloader mode and boot into the downloaded insecure boot image:
Code:
fastboot boot boot.img
Don't worry, this will not replace your existing boot image and will only boot from the insecure one once.
If it does NOT work for you and you get stuck in a boot loop, simply reboot your phone into bootloader and use the above command again. Some users had issues with booting from it the first time, but a second attempt worked.
Once booted into Android successfully using the insecure boot image, simply enter these commands one by one in command prompt (making sure you are in the directory where you downloaded the files):
Code:
adb shell mount -o remount,rw /system
adb push su /system/bin/
adb push Superuser.apk /system/app/
adb push busybox /system/xbin/
adb shell
chmod 06755 /system/bin/su
chmod 0644 /system/app/Superuser.apk
chmod 04755 /system/xbin/busybox
cd /system/xbin
busybox --install /system/xbin/
exit
exit
Reboot your device.
You will now have root access. Tested and confirmed working by Stryder5 and many others.
Credits:
Stryder5 for testing, confirming, tipping me about working CWM, providing the required drivers, and helping others on the thread. :highfive:
Harry GT-S5830 for the insecure boot image.
fkrone for his recovery revert disabler script and his unofficial working CWM before an official one became available.
Kstarz for posting this same recovery method with his own working CWM in this thread before an official one was out.
evaradar for informing about the release of official ClockworkMod recovery.
Koush for developing ClockworkMod recovery.
Chainfire for developing SuperSU.
Everyone else on this thread for testing, providing feedback and hitting the 'THANKS' button. =)
I have tried my best to give everyone the due credit but if I have missed out on anyone, please do remind me.

Yep, worked like a charm. Got Titanium running and restored all my apps
Btw, check your PM.

Checked...thanks. =) Added the links.

stem/bin/sh: su: can't execute: Permission denied
that is what i always get when i put in the "su"--permision denied

jshaw06 said:
stem/bin/sh: su: can't execute: Permission denied
that is what i always get when i put in the "su"--permision denied
Click to expand...
Click to collapse
You need to boot the unsecure boot.img first.

BTW can you confirm me the insecure boot.img you used? I just provided the link to the thread by Harry GT-S5830 but there were multiple ones posted in that thread, so I'm thinking of adding the direct link to the one confirmed working.

HQRaja said:
BTW can you confirm me the insecure boot.img you used? I just provided the link to the thread by Harry GT-S5830 but there were multiple ones posted in that thread, so I'm thinking of adding the direct link to the one confirmed working.
Click to expand...
Click to collapse
I'm pretty sure I used the one Harry GT-S5830 provided.

I used the one in the OP of that thread.. is there a different one I'm supposed yo use?
Sent from my SGH-T999 using Tapatalk 2
---------- Post added at 06:41 AM ---------- Previous post was at 06:23 AM ----------
It works
Sent from my SGH-T999 using Tapatalk 2

jshaw06 said:
It works
Click to expand...
Click to collapse
Glad to hear
Did you install the OTA before doing this? I gained root before installing the OTA.

Stryder5 said:
Glad to hear
Did you install the OTA before doing this? I gained root before installing the OTA.
Click to expand...
Click to collapse
No issues with installing the OTA after root?
Edit: Just noticed in your sig that you did not install the update.

I installed after ota
Sent from my SGH-T999 using Tapatalk 2

jshaw06 said:
I installed after ota
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
You mean you gained root after you installed the OTA?
---------- Post added at 01:12 AM ---------- Previous post was at 01:11 AM ----------
apzalo said:
No issues with installing the OTA after root?
Click to expand...
Click to collapse
I gained root, but haven't installed the OTA yet.

when I boot the boot.img. It rebooted and got stuck at the nexus boot animation for a long time. Does it suppose to do that?

Yes sorry gained root after OTA
Sent from my SGH-T999 using Tapatalk 2

Elemenopee said:
when I boot the boot.img. It rebooted and got stuck at the nexus boot animation for a long time. Does it suppose to do that?
Click to expand...
Click to collapse
Nope, it isn't. Try again...it's safe to try as many times as you want since we're not flashing the boot image; merely booting from it, which is temporary and doesn't last after reboot. Hope it works on the next try.

After step 8 we boot up the phone normally and then start running those adb commands? I'm assuming that's what you mean by "Once booted into Android successfully..." right? Sorry if it's an obvious question, just making sure!

quick question to ease my mind: if i needed to return this device for warranty purposes, how would i revert all of this back to stock? i know its something to do with the stock factory image, or am i wrong?

Ngo93 said:
After step 8 we boot up the phone normally and then start running those adb commands? I'm assuming that's what you mean by "Once booted into Android successfully..." right? Sorry if it's an obvious question, just making sure!
Click to expand...
Click to collapse
Step 8 itself will boot up the phone normally into Android, just using that insecure boot image instead of the stock one. And yes, you then just start entering those adb commands. =)

0.0 said:
quick question to ease my mind: if i needed to return this device for warranty purposes, how would i revert all of this back to stock? i know its something to do with the stock factory image, or am i wrong?
Click to expand...
Click to collapse
Best way would be to grab a stock factory image and flashing it. I recently wrote a post on the portal with the links: http://www.xda-developers.com/android/android-4-2-images-for-galaxy-nexus-nexus-7-4-and-10/
The method can be found at the factory images download page, and is as easy as extracting the image and running the included .bat file while your phone is connected to PC in fastboot mode.

HQRaja said:
Best way would be to grab a stock factory image and flashing it. I recently wrote a post on the portal with the links: http://www.xda-developers.com/android/android-4-2-images-for-galaxy-nexus-nexus-7-4-and-10/
The method can be found at the factory images download page, and is as easy as extracting the image and running the included .bat file while your phone is connected to PC in fastboot mode.
Click to expand...
Click to collapse
so i extract the "occam-jop40c-factory-cd3dc140.tgz" file, then double-click the "flash-all.bat" file?

[How-To] Install Oreo OTA! [T-Mobile]

*DON'T FLASH BACK TO NOUGAT IF YOU ENJOY USING YOUR PHONE*
Ok guys ive made my return and im happy to bring the oreo ota with me.!
Steps to install if your on a rom.
1. Use this flash all link Here
2. After finished and setup your going to need a pc and sideload knowledge
3. Download these ota files
Latest August https://drive.google.com/file/d/1OhWZPTWcuo7zRu9bjiezjKEZxreOk6v7/view OREO
4. Get your phone into recovery mode.
4.a the file is gonna have a lot of letters please do not rename or it wont work
4.b before you get into recovery you will see a dead Android. This IS normal. Your going to want to hold power and push volume up. It's a split second kinda thing. Not something you guys forever. Hot that a few times if it doesn't work the first time.
5 your going to want to go to in recovery to apply update via adb for the August one
6. run the command adb sideload (now drag the file to the command prompt and press enter)
7 if all good you will see a verifiying update the step 1/2 when you see that your fine.
8 Let it do its thing and at the end you may see and error about a drive disregard that.
9 now follow steps 4-7 again but with Oreo ota
10 reboot your system and now you should have oreo!
If your stock locked and never been cocked you can try to install the same method above without using the flash all and if it works congrats if not unlock your bootloader and use the method above.
if any help is needed contact me @ [email protected]
HOW TO ROOT
1. DOWNLOAD THIS. https://drive.google.com/file/d/1zz3Fl9m4-_ozWW1U3ww_e6K_cHPPEMSv/view?usp=drivesdk
2. FASTBOOT BOOT OR FLASH IT RUNNING "FASTBOOT BOOT /PATH/TO/BOOT.IMG" OR FASTBOOT FLASH /PATH/TO/BOOT.IMG
3. REBOOT AND PROFIT.
TWRP 3.2.1-0 Bootable and Permanent
Bootable Fastboot boot this *ONLY FOR OREO*
*Permanent is broken* Use boot able
Unencryption for oreo
Encryption Remover *FOR OREO ONLY*
*Must format then flash*
OREO FLASH ALL OREO *YOU CAN ONLY FLASH THIS AFTER YOU HAVE TAKEN THE OTA* *IF YOU FLASH THIS AND YOU HAVENT AND YOUR PHONE BLOWS UP PLEASE VIDEO IT SO I CAN POST IT ON HERE AND SHOW WHAT NOT TO DO*
Thank to @XirXes for the ota files

There is no root available as of yet we need a boot image to get root once there is one we will have roms and root coming.

Screenies
Here you go

Installation went smooth. thanks for the OTA.

now towait for the root and all will be set

wow you are FAST. awesome work for those that did not get the notification. Can you go "back" to 7.1.1 if desired for whatever reason?

Amd4life said:
wow you are FAST. awesome work for those that did not get the notification. Can you go "back" to 7.1.1 if desired for whatever reason?
Click to expand...
Click to collapse
No. As of right now Oreo starts you clean when you do this

Amd4life said:
wow you are FAST. awesome work for those that did not get the notification. Can you go "back" to 7.1.1 if desired for whatever reason?
Click to expand...
Click to collapse
I recommend (from experience) not trying that.

Making a test twrp real quick

Damn...thanks for your work

joemossjr said:
Making a test twrp real quick
Click to expand...
Click to collapse
Looking to this!
Oreo build is almost as fastest as the Flash [emoji3][emoji16]
Sent from my Moto Z (2) using Tapatalk

Thanks, @joemossjr ! It installed for me too. In my case, for some reason, I had to rename it to update.zip before adb sideload would work, but I'm not sure why. Oreo, yayyyy!

can someone please pull a system backup not image? i have a twrp that you can boot not flash and pull the stuff

where's the TWRP, so only use a fastboot flash boot image.zip?

joemossjr said:
can someone please pull a system backup not image? i have a twrp that you can boot not flash and pull the stuff
Click to expand...
Click to collapse
I could, do you have the TWRP link?
---------- Post added at 12:55 PM ---------- Previous post was at 12:47 PM ----------
What I wanted to do was boot slot _b rooted 7.1.1 and copy slot _a stock Oreo, but it nagged me about potentially bricking in fastboot after fastboot set_active _b (i.e., due to invalid bootloader, etc.). A bootable TWRP straight to recovery would solve the issue. All I wanted to do was get a copy of Oreo boot_a, but adb as non-root user does not have permission to dd copy /dev/block/bootdevice/by-name/boot_a . So, yay for bootable TWRP!

@jhofseth please write me on hagnouts

please message me on hangouts people who want to help [email protected]

When you brick and have to go to a leaked 8.0 image

Unable to flash update
For whatever reason i'm unable to flash the update, and i'm currently left with a soft-bricked device. When trying to flash the update via recovery gives me
Code:
E:failed to unmount /
E:failed to set up expected mounts for install; aborting
failed to open driver control: no such file or directory
installation aborted
also when selecting install from ADB it says
Code:
Supported API: 3
stopping adbd...
failed to open driver control: no such file or directory
failed to open driver control: no such file or directory
is there something i can do to remedy this??
forgot to mention that yes i did install the first package and properly executed the flashall command from the first zip folder, and i did try sideloading the second package as it was and as an update.zip file to no success.

Shiro12 said:
For whatever reason i'm unable to flash the update, and i'm currently left with a soft-bricked device. When trying to flash the update via recovery gives me
also when selecting install from ADB it says
is there something i can do to remedy this??
forgot to mention that yes i did install the first package and properly executed the flashall command from the first zip folder, and i did try sideloading the second package as it was and as an update.zip file to no success.
Click to expand...
Click to collapse
Do you go completely stock?

[ROOT] EU LMV405EBW - Magisk

I couldn't find any guide for rooting the V40, so I thought I'd write down the steps I took to root my new EUR V40 - LMV405EBW. Maybe it will help others. Sorry if this is somewhat confusing, I didn't have time to make a polished version. It's basically made from my notes during the process with the commands copied from bash history.
-First, unlock the bootloader following LG's instructions here: https://developer.lge.com/resource/mobile/RetrieveBootloader.dev
There's no TWRP for the V40 and the one made for G7 doesn't work. I don't have the time and knowledge to even attempt to compile TWRP for the V40, so I proceeded with just patching an original boot image with Magisk.
You can get the patched boot images that I used from here:
Oreo 10e: boot_a_magisk_patched_10e.img
Oreo 20f: boot_a_magisk_patched_10f.img
Pie 20a: boot_a_magisk_patched_20a.img
Pie 20b: boot_a_magisk_patched_20b.img
Pie 20f: boot_a_magisk_patched_20f.img
Pie 20g: boot_a_magisk_patched_20g.img
Q 30b: boot_a_magisk_patched_30b.img (this requires flashing to the active boot partition).
Q 30c: boot_a_magisk_patched_30c.img (this requires flashing to the active boot partition)
Q 30d: boot_a_magisk_patched_30d.image (this may or may not work with "fastboot boot" and could require flashing to the active boot partition. I haven't tested if live boot still works. I just did fastboot flash boot_x img_file).
You can try to boot it with with fastboot if you have a LNV405EBW and skip the KDZ extraction part.
Installing Magisk:
Flashing this image isn't necessary, just straight boot should be sufficient and safe.
First install Magisk Manager 7 on the phone then connect the phone to the PC and run:
Code:
adb reboot bootloader
fastboot boot boot_a_magisk_patched_10e.img
After the phone boots the OS with the external boot image, open Magisk Manager and tap on Install. Select the option to Direct install to the active slot. I played it safe and decided to NOT flash also on the inactive slot. I've left it alone so I can use it in case of need of recovery.
You'll probably notice that you don't have a connection to the carrier. Just ignore it, it will back once the phone is booted normally.
Reboot and you will have permanent root until you switch the A/B slots.
In case my patched boot image doesn't work, you can just make your own.
Tools needed:
Magisk Manager 7.0.0 installed on the phone
LG Bridge installed on a Windows machine.
a Linux machine or VM (I used the latest ubuntu desktop), python3 with the zstandard module installed and kdztools from steadfasterX's repo. Maybe kdztools would work on Windows too, I haven't tried it.
adb, fastboot
You need to procure an original ROM file for your phone model. It can be downloaded easily with LG Bridge. Just connect the phone to a Windows PC, start LG bridge, go to the Software update tab and click on Update error recovery. Wait for the download to start and disconnect the phone. Ignore LG Bridge complains about not being able to flash after the downloading stage is completed. Don't click anything in Bridge and before closing it go to C:\Users\<your_username>\AppData\Local\LG Electronics\LG Bridge\SWUpgrade and copy your KDZ somewhere else. Preferably send it to the Linux VM to the LG work folder, it'll be needed there.
On Linux open a terminal:
Code:
cd ~/Documents
mkdir LG
cd LG
git clone https://github.com/steadfasterX/kdztools.git
cd kdztools
nano undz.py -c
For kdztools to be able to extract the V40 images, I needed to edit undz.py and comment the lines 88-90. So, this block should all be commented or undz will fail to extract the boot partitions.
Code:
#if len(dz_item['pad']) != 0:
# print("[!] Error: pad is not empty", file=sys.stderr)
# sys.exit(1)
To extract, with the KDZ copied to ~/Documents/LG/
Code:
cd ~/Documents/LG/kdztools
./unkdz.py -f ../V405EBW10e_00_OPEN_EU_DS_OP_0109.kdz -x
cd kdzextracted/
List the partitions contents and look for the IDs of boot_a and/or boot_b. In my case they were 44 for boot_a and 63 for boot_b
Code:
../undz.py -f V40510e_00.dz -l
Extract boot_a or boot_b or both, they're identical:
Code:
../undz.py -f V40510e_00.dz -s 44
../undz.py -f V40510e_00.dz -s 63
You can find the extracted boot images in the dzextracted subfolder. Get boot_a.image or boot_b.image or both from there and send them to the phone in a location accessible by Magisk Manager. The Download folder should do fine.
Open Magisk Manager and tap Install, select Patch Boot Image file and patch the image file(s) you extracted. Get the patched_boot.img that Magisk Manager saves in the Download folder and send it to a PC where you have adb and fastboot.
Go to the beginning of the post to the Installing Magisk section.

Damned tempting, but I'll wait until after Pie drops.
Sent from my LM-V405 using Tapatalk

Glad to see this, hopefully it's a start for all of us.

If anything, at least a way to unlock the bootloader via legitimate channels! Gonna be generating that string, next chance I get, to be ready.
Sent from my LM-V405 using Tapatalk

Once runningnak3d gets a hold of this, we should be good with the v40. Cool beans.

Hey do the unlock codes online work for $ 12-15 on sprint? I used to flash phones back in the day and got a great deal on a bad IMEI sprint lg v40, but so far I can see there isn’t a way yet. On top off all that I m in Europe and don’t want to get the error message that I m out of the Region. I would have to go to USA just to unlock the phone.

@runningnak3d

Can't I install the firmware on a different device?

V version can not unlock BL, so envious

Getting a boot image like that works but I find it stupid to not upload it so that the others don't have to do it. Besides only one model can be bl unlocked so there won't be any model mismatch (except firmware versions but keeping up with them is not that hard)

LameMonster82 said:
Getting a boot image like that works but I find it stupid to not upload it so that the others don't have to do it. Besides only one model can be bl unlocked so there won't be any model mismatch (except firmware versions but keeping up with them is not that hard)
Click to expand...
Click to collapse
Or I could find you stupid for not noticing the patched image is in my first post.

DLS123 said:
I find you stupid for not noticing the patched images are in my first post.
Click to expand...
Click to collapse
I recommend labeling the boot images with their firmware since future firmwares won't be able to run the same boot image but other than that I'm really sorry.

LameMonster82 said:
I recommend labeling the boot images with their firmware since future firmwares won't be able to run the same boot image but other than that I'm really sorry.
Click to expand...
Click to collapse
I mentioned in the description 1 line below the link that it's for 10e. There was no other update in a long time. I don't think there can be any confusion for now. I can edit and label the file when there's will be another fw update.

It looks like unlocking the bootloader breaks Widevine L1 on the V40 and downgrades is to L3. No more HD or UHD Netflix.
I couldn't find any other solution than to re-lock the bootloader to restore L1.
This doesn't happen on the V30.

@DLS123
Thank you for all!
I ask you for more details; i'm stuck at flashing first image in adb; it returns an error; have LMV405EBW with 10f. unlocked bootloader of course
Thx again for your support!

@daphix what do you mean by flashing the first image? You're not supposed to flash my patched boot image. Just boot it without flashing and Direct install Magisk from it with Magisk Manager.

DLS123 said:
@daphix what do you mean by flashing the first image? You're not supposed to flash my patched boot image. Just boot it without flashing and Direct install Magisk from it with Magisk Manager.
Click to expand...
Click to collapse
Thx for answer; i not have too much experience in working with Magisk;
i just folowed your steps:
First install Magisk Manager 7 on the phone then connect the phone to the PC and run:
adb reboot bootloader
fastboot boot patched_boot_a.img
when i run fastboot comand for flash, is runing, but is returning "an error at line x"
i suppose is something wrong in this instructions.

daphix said:
Thx for answer; i not have too much experience in working with Magisk;
i just folowed your steps:
First install Magisk Manager 7 on the phone then connect the phone to the PC and run:
adb reboot bootloader
fastboot boot patched_boot_a.img
when i run fastboot comand for flash, is runing, but is returning "an error at line x"
Anyway; understand now what to do;
Steps are below:
- first install magisk manager
- download magisk zip from magisk site or from magisk manager himself on phone
- download patched_boot_a.img to phone from our good contributor
- use magisk manager and select inslall image of patched_boot_a.img from phone
- magisk manager will generate a magisk patched image
- transfer this magisk patched image (not patched_boot_a.img) to pc in ADB folder
- flash with Adb this magisk patched image from pc to phone.
Thx to our friend!
---------- Post added at 09:53 AM ---------- Previous post was at 09:21 AM ----------
DLS123 said:
@daphix what do you mean by flashing the first image? You're not supposed to flash my patched boot image. Just boot it without flashing and Direct install Magisk from it with Magisk Manager.
Click to expand...
Click to collapse
Hi;
using Magisk mamanger and your file was generated a file: magisk_patched.img
pls support; trying to flash that image from PC with adb not work:
fastboot flash partition_a magisk_patched.img
Click to expand...
Click to collapse

@daphix
Whatver you're trying to do, is nowhere in the procedure I used. If you already booted with my boot image why are you making another boot image with Magisk and why are you trying to flash that? I never wrote anything of the sort.
if you booted with my patched image you already have temporary root and can use Magisk Manager to Direct install Magisk itself.

DLS123 said:
@daphix
Whatver you're trying to do, is nowhere in the procedure I used. If you already booted with my boot image why are you making another boot image with Magisk and why are you trying to flash that? I never wrote anything of the sort.
if you booted with my patched image you already have temporary root and can use Magisk Manager to Direct install Magisk itself.
Click to expand...
Click to collapse
Hi , thank you for reply;
I tried many combinations of your commands;
maybe due that am noob, but succesion below simply is not working:
First install Magisk Manager 7 on the phone then connect the phone to the PC and run:
adb reboot bootloader
fastboot boot patched_boot_a.img

Anyone got trouble rooting?

Anyone noticed that can't root with magisk the p20 pro or it just me?

Yes! There is a way to extract the boot image, use Magisk to patch it, then flash that boot image via fastboot. I'm actually waiting for someone with experience to advise on these items:
1. Can I extract the boot image from my phone directly? If so, can someone point me in the direction of the software to do so?
2. If I can't extract directly, do I need to use the update file from Firmware Finder that matches my current firmware exactly? I'm running B155, but there seems to be slight variations in the naming for some of the available firmware.
3. After I get all of this completed successfully, how do I verify that the image is good to use to avoid bricking the phone?
Thanks in advance to anyone that could help!

sarichter said:
Yes! There is a way to extract the boot image, use Magisk to patch it, then flash that boot image via fastboot. I'm actually waiting for someone with experience to advise on these items:
1. Can I extract the boot image from my phone directly? If so, can someone point me in the direction of the software to do so?
2. If I can't extract directly, do I need to use the update file from Firmware Finder that matches my current firmware exactly? I'm running B155, but there seems to be slight variations in the naming for some of the available firmware.
3. After I get all of this completed successfully, how do I verify that the image is good to use to avoid bricking the phone?
Thanks in advance to anyone that could help!
Click to expand...
Click to collapse
This guide has everything you should need. https://topjohnwu.github.io/Magisk/install.html
1. No, unless rooted
2. Find either the same FW you are on, or extract from a OTA.
3. Not sure on that one, it's always worked for me.

purple patch said:
This guide has everything you should need. https://topjohnwu.github.io/Magisk/install.html
1. No, unless rooted
2. Find either the same FW you are on, or extract from a OTA.
3. Not sure on that one, it's always worked for me.
Click to expand...
Click to collapse
Thank you so much! Do you have any idea where I can get the OTA or at least figure out in specificity which OTA on Firmware Finder is correct? It sounds like it needs to be 100% exact to avoid issues / bricking.
---------- Post added at 03:12 PM ---------- Previous post was at 02:18 PM ----------
purple patch said:
This guide has everything you should need. https://topjohnwu.github.io/Magisk/install.html
1. No, unless rooted
2. Find either the same FW you are on, or extract from a OTA.
3. Not sure on that one, it's always worked for me.
Click to expand...
Click to collapse
OK... so I was able to extract the RAMDISK.IMG file but I can't patch it because Magisk Manager hangs after I install it. Is there a way to patch the RAMDISK.IMG file manually or via PC?

OK... so if anyone who is having trouble rooting... this is what I did to get root.
1. Be sure to download the firmware you are CURRENTLY on to avoid any possible issues.
2. Extract the RAMDISK.img file from the post above: https://topjohnwu.github.io/Magisk/install.html
3. Obtain a previously patched RAMDISK file to get an initial Magisk install on your phone first. There is one on XDA floating around named CLT-29-MAGISK.img.
4. Boot into FASTBOOT and then get to a CMD window with your ADB tools and use the command "fastboot flash ramdisk CLT-29-MAGSIK.img"
5. Reboot the phone and download Magisk Manager 5.5.5.
6. After installing Magisk Manager 5.5.5, install the next two upgraded versions while INSIDE Magisk Manager until you get to 7.1.x.x.
7. Click INSTALL on the Magisk option and let Magisk Manager patch your freshly extracted RAMDISK.img file from Step 2.
8. Copy that RAMDISK.img file to your PC.
9. Boot into FASTBOOT and then get to a CMD window with your ADB tools and use the command "fastboot flash ramdisk patched_boot.img"
10. Reboot and you'll have root!

sarichter said:
OK... so if anyone who is having trouble rooting... this is what I did to get root.
1. Be sure to download the firmware you are CURRENTLY on to avoid any possible issues.
2. Extract the RAMDISK.img file from the post above: https://topjohnwu.github.io/Magisk/install.html
3. Obtain a previously patched RAMDISK file to get an initial Magisk install on your phone first. There is one on XDA floating around named CLT-29-MAGISK.img.
4. Boot into FASTBOOT and then get to a CMD window with your ADB tools and use the command "fastboot flash ramdisk CLT-29-MAGSIK.img"
5. Reboot the phone and download Magisk Manager 5.5.5.
6. After installing Magisk Manager 5.5.5, install the next two upgraded versions while INSIDE Magisk Manager until you get to 7.1.x.x.
7. Click INSTALL on the Magisk option and let Magisk Manager patch your freshly extracted RAMDISK.img file from Step 2.
8. Copy that RAMDISK.img file to your PC.
9. Boot into FASTBOOT and then get to a CMD window with your ADB tools and use the command "fastboot flash ramdisk patched_boot.img"
10. Reboot and you'll have root!
Click to expand...
Click to collapse
Not sure why people struggle with this. The guy who started this thread has a copypasta guide he posted and could have followed. You should post your post in guide section for others I guess.

purple patch said:
Not sure why people struggle with this. The guy who started this thread has a copypasta guide he posted and could have followed. You should post your post in guide section for others I guess.
Click to expand...
Click to collapse
People struggle because the firmware is from 100 different regions, all with different release dates, there is no official TWRP that works 100% correctly with encryption, and Magisk changed the standard install method. I'm not surprised that people are having a tough time figuring out what to do so they don't brick their phone. This thing isn't cheap!