did you successfully reverted back to Oreo latest?I installed Pi all the way up to Beta 3 but found that I could not record phone calls, which is important for me. Apparently it is a known issue. I use Android to get away from senseless lock downs. I went back to 8 Oreo by downloading and using Odin again to go to CRLB. Nightmare. Boot loop. Had to use power vol down bixby then as soon as change detected vol up power and bixby to get to factory reset because cache reset did not work. Took me hours and still working on getting back.
I'll only go to Pie if recording comes available or if rooted Pie with lots of features is developed. I can't do it.
if yes, can you please state procedure ?