Hi. Is it possible to use TWRP to flash my Note-9 with a factory stock ROM? Reason for the question is that my Note-9 is currently running Android 10, but I’d like to downgrade to Android 8.1.0 Oreo, which is not possible via Odin, because the phone prevents this from happening due to Android 8.1.0 having a lesser (upgrade) binary value.
You would have to find a twrp flashable stock ROM zip in xda forums if not then no u cant
Although u can flash a custom 8.1.0 but u must format in etween Android versions or it will boot loop