I recently installed lineage OS by following the tutorial here.
Now I want to go back to FP2 OS (fp2-gms-19.05.3-manual), wiped everything with TWRP and then followed the instructions from the readme file found in the FP2 OS download, but after rebooting the phone just stays with the animated boot logo forever. I reluctantly tried “fp2-gms-19.08.1-manual”, too, even though the last time I had it installed I couldn’t connect to any W-LAN, but with this one the boot process didn’t finish either.
I already managed once to go from FP2 OS to lineage and back, following the respective tutorials, but now the procedure doesn’t work anymore and I don’t know what I’m doing wrong. Is there any way to get a boot with console output so I can at least pin-point the problem better?
I am slightly suspicious of the installation speed, because it barely took a minute to go through the entire “flash-for-windows.bat”-file. The script said everything was fine, but I’m still wondering if that was normal.