so, since the release of the USB loader alot of people who want to run Guitar Hero and some custom versions have been having trouble; a hard disk cant hold multiple games with the same gameid! So we're gonna fix that, by using a few tools. youre gonna need -WBFS manager -guitar hero custom iso -hex editor (I like neo hex editor). - your usb hdd (hook it up to your pc) steps: 1) open WBFS manager 2) load the usb hdd (Load button), scroll to Guitar Hero 3, find the gameID 3) close WBFS manager 4) open Neo Hex Editor 5) open the Guitar Hero Custom iso 6) Ctrl + F to search, enter the gameID. 7) press F2 to edit, change the gameID to something else (e.g. to RGHX52) 8) press save, close Neo Hex Editor 9) open WBFS manager, load hard disk, add game. now that the gameid for the custom iso has been changed, it will create new save files for the custom and you can have multiple Guitar Hero's (/customs) on the same HDD.