Originally posted by RainMaker.
why not backup your4.00 system then data transfer, then back it up after you data transfer again, then just restore it anytime you wanna play assassins creed? just another idea
because a back cant copy copyright restricted data. Only a data transfer can, and that cut the data instead of coping, or if you have a playstation plus account you can back up only the game saves but not extra content like extra missions ect.