Could you please provide some more info? DVD-R or DVD+R? And why are you sure you have the rev7 cIOS, sorry many people think they do while they don't.
im using DVD-R....For Rev7 i installed it over network and got no errors and i can play sonic unleashed and need for speed undercover....which i think needs rev7 too play...
Edit: oh yea and need for speed undercover wouldnt work before i installed it...
@Bunjolio, I don't really think your sister should be doing those things at a young age. No offense, but its likely possible that she got manipulated online?