Ok this is a new one.... I used the one shot boot disc to get update to install and (with a "copy" of assassins creed brotherhood) and it froze and said "SYSTEM UPDATE STOPPED Cant read the update from the disc. Please reinsert the disc to continue the update If problem persists visit www.xbox.com/support status code 23EF 3080 B200 0700 C000 0059" reboot same thing. Now it is stuck on this screen with a detached HD and I tried to unplug power supply. I tried holding down the "sync" button on the 360. I have tried putting the kinnect update on a USB and still nothing. My only thought is purchasing the retail game (on top of the one I'm using sneaky sneaky word use here) and seeing if that works unless someone else has a suggestion. My thought is.....when it was updating after I used the one shot boot disc it might of had a dirty disc error upon restart and it needs the game to finish this BUT I can't just give it the game cause I have to use the one shot boot disc first. And the system is only wanting the game at this point. So yeah anyone care to help it would be greatly greatly appreciated.