what you need: link >>>>all what you need to do mod<<<< link
1) format usb and move your gamertag onto usb in by going xbox dashboard then memory
2) put usb into computer and open up usbxtafexplorer
3) open content folder, your profile (E0004...) then keep clicking folder untill find file that has same name as profile folder (E0004...) extract file to your desktop,, KEEP XTAFEXPLORER OPEN !
4) open Le Fluffie App
5) click file,, open file,, then open your profile from desktop
6) go across to profile tab / it will come up with alot of your info and games played
7) click 'unlock all' button all achievements of games played have been unlocked
go up to security tab then click 'fix' button
9) ok now open up modio and open your profile and go down to 'rehash and resign' button,, click it about 3 times to be safe
10) now open usbxtafexplorer back up and delete your profile off your usb ( not folder, only the single file) and then copy your profile that is on the desktop back into usbxtafexplorer
put usb back into xbox and move back to harddrive and your all set