I have a launch 60 gig phat ps3, I know if I downgrade I will lose BD playback. I have backed up all of my dev_flashes. I heard its as simple as copying back over a couple files from one of my dev_flashes? Is this true and can anyone tell me what files I need to backup before I downgrade and then copy back over to retain my bd playback? I have searched and come up empty handed. I am only asking this to prepare my self in case I want to downgrade from CFW.