Best way Android Q -> P ?

[Eistee82]

Hello,

I have stock Android Q on my phone and it doesn't get any updates and it is damn buggy so I want to go back. What is the easiest or best way back?
I have read an A / B slot switch or do I need to flash it again? If I have to flash it, the question is how. Does Android P work as before? I have heard of firmware updates that cannot be undone.

Regards Alina

 

[RFD80M-75679]

Hello,

I have stock Android Q on my phone and it doesn't get any updates and it is damn buggy so I want to go back. What is the easiest or best way back?
I have read an A / B slot switch or do I need to flash it again? If I have to flash it, the question is how. Does Android P work as before? I have heard of firmware updates that cannot be undone.

Regards Alina

Using EDL mode.

Download MiFlash, ADB Drivers 1.43, fastboot image (preferred 10.0.13.0 or 10.0.18.0), and (optional) Qualcomm drivers. Install them.

Extract the fastboot image.

Unlock bootloader. Tap build number 7-8 times, then turn on OEM Unlock and USB debugging. Turn off phone and turn on with fastboot mode (by long press power and vol-). Type fastboot oem unlock. Wait until it finish wipe off data and reboot phone to system.

After turn on with 'Welcome' screen, turn off again and boot to fastboot mode. Type fastboot oem edl. Open MiFlash. Select the fastboot files where it was extracted to. Select clean all (do not select clean+lock). Click refresh until your device and com port appears. Start flashing.

After 'success' flashing appears, long press power and wait until 40 times the AndroidOne animation loops. Long press the power again until it restarted once more and wait. Your phone will now getting back to Android Pie again.