Guitar hero 3 retail crashes xbox 360

[Bushwick2002]

reverted my dvd drive back to stock firmware. still dont boot. I changed my dvd keys to my friend's xbox 360 keys and game booted fine so its not the dvd drive.
I got it to work on my xbox by doing the console reset codes posted on llamma's website.

"Clear Any Failed system updates that cause the console to error.

1. With the console off, press and hold the sync up button (the small white one)
2. While holding the sync button press the power button to turn on the console
3. Continue to hold the sync button until the Console has booted up completely.
4. During the boot process the console should clear any failed updates, allowing you to use it normally"


Cheers and thanks for your help.

btw: i still dont know why it will only affect this game.