IGN:

"The release of Guitar Hero II on Xbox 360 brought cheers from the faithful who've been eager to rock. Things, however, haven't been so jolly for early adopters of Guitar Hero II. Of chief concern is an issue with some copies of Guitar Hero II that had faulty whammy bar control.

A week after release, this issue was fixed with an auto-update. The only thing the update addressed was the whammy bar issue. Reports across the Internet, however, suggest that the update is "bricking" some systems. That means, after the update is downloaded, the system becomes inoperable.

A spokesperson for RedOctane told IGN that the company was "definitely looking into it."

It's unknown why some systems are affected negatively by the update. These events are similar to an occurrence last year, when a dashboard update rendered some 360s dead. When that happened, Microsoft replaced all affected systems.

If your 360 bit the dust following the Guitar Hero II update, contact Xbox customer service and explain the situation. If you haven't downloaded the GH II update yet, you may want to hold off putting the game in your system for the time being. It's better to be safe than sorry.

We'll keep you posted on any fixes to the GH II auto-update. "