Reverting to Stock OS?

sculpordwarfaquarius

Is there a walkthrough on how I can revert my phone to its stock OS from GrepheneOS I'm using a Pixel 6.

retired-mod-account

Yes, it's at this section of installation instruction: https://grapheneos.org/install/web#replacing-grapheneos-with-the-stock-os

sculpordwarfaquarius

retired-mod-account

Thanks for that. I'm just confused about a couple things. At what stage do I remove the "non-stock key"

Would I unlock my bootloader, remove the non-stock key, then proceed to flash the stock image and relock the bootloader?

shbsssn

retired-mod-account

Is this still the correct process?

The link states:

"The GrapheneOS factory images flash a non-stock Android Verified Boot key which needs to be erased to fully revert back to a stock device state. Before flashing the stock factory images, you should boot the device into fastboot mode and make sure the bootloader is unlocked. Then erase the custom Android Verified Boot key to untrust it:"

https://grapheneos.org/install/web#replacing-grapheneos-with-the-stock-os

But there is no procedure of how to actually do this.

retired-mod-account

sculpordwarfaquarius Before flashing and locking the OS, as you said

angeloweb

Is there a way to save data when going back to stock os? contacts, pictures, texts?

[deleted]

angeloweb since there is no reliable system-wide backup tool available, I would recommend to do it manually. See which of your apps are able to export data to files, or you can copy Android/data/"app specific" for those that don't. The best way is not going back to stock :)

treequell

shbsssn Yes, that is still the correct process.

If I were doing it I would take the following steps:

Open the GrapheneOS web installer, and with it:
a. Unlock the bootloader, then
b. Erase the custom boot key.
Close the GrapheneOS web installer.
Open the Google Web installer, and with it:
a. Flash stock Pixel OS, then
b. Lock the bootloader.

trancilo

treequell

Thanks for this clear overview.

Indeed don't forget to close the tab with grapheneos installer or the google installer will fail with an error: "another adb instance seems to be using your phone. adb kill-server."
After closing grapheneos web installer you might have to restart the bootloader for the google installer to see you phone.
Tested on pixel6a

shbsssn

For future generations if they happen across this post:

$ fastboot flashing unlock
OKAY [ 0.153s]
Finished. Total time: 0.156s
$ fastboot erase avb_custom_key
Erasing 'avb_custom_key' OKAY [ 0.425s]
Finished. Total time: 0.575s
$

pblanton

I did this...
https://www.youtube.com/watch?v=TIHG1j0yylc

Worked great.