[Guide] Flash Magisk on Android 12

[myhuky3]

Trying to root the Pixel 5 running Android 12 by flashing a magisk-patched boot image results in the phone only booting to fastboot mode ("failed to load/verify boot images")
Some users have reported that booting (instead of flashing) the patched boot image works and makes root temporarily available but i didn't have any success with that.
The phone booted up but root didn't work.

I won't explain how to unlock the bootloader or set up adb here.

!Warning! This will wipe your phone so take a backup!
Also i do not take any responsibility if you break your device.
And if anything goes wrong just factory reset your device using the Android Flash Tool or by following this tutorial.

Here's what i did to get Magisk v22.0 working on the first developer preview of Android 12:


Install A12 with disabled AVB & dm-verity:

1. Make sure USB-Debugging is enabled in developer-options and you have authorized the pc you're using on your phone.
   
   
2. Boot your phone into fastboot mode.
   You can do this by turning it off and then starting it by holding Power + Volume Down
   until fastboot mode appears or just adb reboot bootloader
   
   
3. Go here and click on the link for the Android Flash Tool.
   (I didn't copy the link directly so i don't have to update it everytime google releases a new update)
   
   
4. It should ask you to allow the website to access ADB Keys. Click Ok.
   If the website somehow doesn't work, try using Google Chrome.
   
   
5. Select your Pixel 5. If it's not showing up click add device.
   
   
6. Click on the edit symbol (pen) in the box where the selected build is shown.
   
   
7. Make sure Wipe Device, Disable Verity and Disable Verification are checked.
   
   
8. Install and boot the phone when it's finished.

Patch & flash boot.img

1. Download and install the Magisk Canary App from GitHub.
   
   
2. Download the factory image from here and extract boot.img from it.
   (Inside the downloaded zip-file is another zip file containing the boot image)
   
   
3. Copy the extracted boot.img to your phone and open the magisk app.
   
   
4. Click on Install -> Select and Patch a File and let it do its magic.
   
   
5. Copy the magisk-patched boot image that should be found in your phones download folder back to your PC.
   
   
6. Reboot into fastboot mode as i explained earlier and flash the patched boot image.
   (fastboot flash boot magisk_patched.img)
   Then reboot the device.

Now root should be working. If it bootloops and says your phone has to be factory reset, do it.
If for some reason you still get an AVB-Error and end up stuck in fastboot mode just flash the stock image and try to patch it again.

This is my first post on here and i didn't have much time but i'm glad if it helped at least one person.

 

[Ivixmax]

Thanks for create this post.Works perfect,

 

[myhuky3]

Thanks for create this post.Works perfect,

 

[ridobe]

Hey, thanks for this. FYI @LazerL0rd (zest kernel) detailed here (click on the spoiler) how to do this with just the command line and factory images and without the need for the AFT.

edit: formatting

 

[vandyman]

I keep on getting the AVB-Error to no end.

 

[morpheus620]

new beta magisk not working

 

[myhuky3]

new beta magisk not working

Make sure to disable verity & verification and use magisk canary, not beta

 

[morpheus620]

okay. is working. sorry für the misstake.

 

[myhuky3]

okay. is working. sorry für the misstake.

Alles gut

 

[greenlight63]

Anyone able to get safety net to pass on Android 12?

 

[myhuky3]

Anyone able to get safety net to pass on Android 12?

Unfortunately no, universal safetynet fix 2.0.0 by kdrag0n makes basicIntegrity pass but since the update to dp3 CTS still fails.

 

[tauio111]

Dirty flashing newer factory images will restore the verity and verification state, so when you patch the kernel with magisk it will fail to boot again.
Installing a verity and verification disabled image without wiping from the web based flasher will also corrupt your data and not let the phone boot, forcing you to wipe.

Wonder what the flags are for flashing factory images with verity and verification state off and giving the ability to continue on without wiping and being able to boot the magisk patched kernel again.

fastboot update --disable-verity --disable-verification image-redfin-spp3210325.010.zip maybe?


Or prepatch the boot.img before flashing it with fastboot, and then flashing it back before rebooting from after flashing the factory image as an update?

 

[myhuky3]

Dirty flashing newer factory images will restore the verity and verification state, so when you patch the kernel with magisk it will fail to boot again.
Installing a verity and verification disabled image without wiping from the web based flasher will also corrupt your data and not let the phone boot, forcing you to wipe.

Wonder what the flags are for flashing factory images with verity and verification state off and giving the ability to continue on without wiping and being able to boot the magisk patched kernel again.

fastboot update --disable-verity --disable-verification image-redfin-spp3210325.010.zip maybe?


Or prepatch the boot.img before flashing it with fastboot, and then flashing it back before rebooting from after flashing the factory image as an update?

Don't know but sounds interesting. I just use

fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img

after every update

 

[caballon]

Works like a charm Android 12 pixel 4a 5g

 

[THEVAN3D]

I just installed the newest Public Beta via OTA. Can I root? I was rooted on 11 before and just enrolled in the beta program and installed it via OTA. Without factory reset or reflash. Now I tried patching boot.img via Magisk Manager, but it wont boot. I mean it boots, but wont unlock phone to homescreen. I'm locked out of my phone. Reverted back to stock PB1 boot image. Any ideas without factory reset?

 

[QuickInfo]

I just installed the newest Public Beta via OTA. Can I root? I was rooted on 11 before and just enrolled in the beta program and installed it via OTA. Without factory reset or reflash. Now I tried patching boot.img via Magisk Manager, but it wont boot. I mean it boots, but wont unlock phone to homescreen. I'm locked out of my phone. Reverted back to stock PB1 boot image. Any ideas without factory reset?

I just tried it using the canary build and it won't boot either. It gets stuck at the Bootloader screen and shows "Failed to load/verify boot images". Maybe we need to wait for an update to for Magisk?

 

[kafisc]

I just tried it using the canary build and it won't boot either. It gets stuck at the Bootloader screen and shows "Failed to load/verify boot images". Maybe we need to wait for an update to for Magisk?

Did you try it according to the manual from the first post from @myhuky3?

 

[QuickInfo]

Did you try it according to the manual from the first post from @myhuky3?

Not yet, I'll wait until the end of the beta program before I reset it. I can get temporary root by booting into the patched Magisk boot image

 

[badapple420]

Following the OP it worked great on the public beta been running it since last night its awesome thank you for the guide

 

[bubbyj]

delete