I'm going to update my rooted Samsung S21 from Android 11 One UI 3.1 to Android 12 One UI 4, can someone confirm that the standard firmware update procedure (patched ap + home_csc + bl + cp) will work?
This is where I'll put the OTA /update.zip/ links for the S21 / S21P / S21U:
Rename [name].bin to [name].zip and paste it into the adb folder
Enable USB Debugging from the Developer Options
Reboot your phone ./adb start-server
Trust the computer ./adb reboot recovery
With vol-up and vol-down go to ADB Update and press the Side/Power button ./adb sideload update.zip
!!! Remove ./ if you're using Windows
!!! Obviously Google Pay and (possibly) other banking apps don't work
So, now that we have OneUI 4.0 Beta 1 rolling out to countries (ofc only 7), it has come so far in Germany & Korea (as far as I know). So the rest of the world wants an update.zip link, so don't be selfish and please, if you have one, capture the .bin file and share it in this thread.