As written elsewhere, I’ve upgraded my S9+ from Oreo to Q (8 to 10), and then installed /e/.
However, I have some audio problems so I wanted to go back to stock ROM and check if they
are there too.
I have tried several times to revert to stock ROM, but the phone always enters a boot loop (Vibrates and Shows “Samsung S9+ secured by knox” about every 9 seconds). Have wiped cache, data etc.
I can boot into TWRP and install /e/ with no trouble.
I also tried installing Android 8 stock rom, but phone download refuses to accept it due to some version difference.
Any help or suggestions appreciated.