Flashed LineageOS on Samsung but couldn't set a PIN? "Screen lock was already changed" error = FRP still active in persistent partition.
Fix:
adb shell locksettings set-disabled true
adb shell dd if=/dev/zero of=/dev/block/by-name/persistent bs=4096
adb shell locksettings set-pin YOURPIN
adb shell locksettings set-disabled false
Always remove Google accounts before flashing. The LineageOS docs mean it.
#LineageOS #Android #Samsung