I have edited AP_x.tar.md5 of SM-G935u using ubuntu(no kitchen). I tried flashing the same(edited AP file) using odin, but while flashing when it gets to
system.img.ext4, i get the error message FAIL!(auth). Is there anyway to successfully flash the edited AP? Btw the bootloader is locked. This is my first time attempting something like this. I would really appreciate if someone can point me in the right direction.