Locking bootloader to pass play integrity

[lidicoxe]

I know you can pass it with the magisk module, but if I want to sell the phone to a regular user with no knowledge about custom roms, magisk etc, and they want to use banking apps etc, I need to relock bootloader.

Right now I have xiaomi.eu rom,orange fox recovery and magisk.

Clean flashing official rom (wiping all data) and then locking bootloader will accomplish that? I don't need to do any extra step, right?

 

[gogocar62]

1, log out Mi account from the device
2, Sign out the Google account from the device
3, install stock ROM via Miflash using script > clean all - flash_all.bat
(Global device = Global ROM / CN device = CN ROM)
4, lock the bootloader by entering the fastboot command: fastboot oem lock

 

[ntlkr]

1, log out Mi account from the device
2, Sign out the Google account from the device
3, install stock ROM via Miflash using script > clean all - flash_all.bat
(Global device = Global ROM / CN device = CN ROM)
4, lock the bootloader by entering the fastboot command: fastboot oem lock

Genuine question.

I once did steps 3 and 4 while experimenting with my RN12, and after I locked BL it ended in a semi-hardbrick that I was only able to rescue via EDL.

Is signing out the key to not getting a bricked device (so it's related to FRP)?

 

[gogocar62]

You probably installed a Global ROM on the CN device or vice versa and locked the bootloader. This caused the brick.

 

[lidicoxe]

1, log out Mi account from the device
2, Sign out the Google account from the device
3, install stock ROM via Miflash using script > clean all - flash_all.bat
(Global device = Global ROM / CN device = CN ROM)
4, lock the bootloader by entering the fastboot command: fastboot oem lock

Thanks.
Since I bought the device in the EU should I flash the EU version instead?

 

[gogocar62]

It doesn't matter if it will be EEA or Global ROM.