This firmware modifications boosts that installers of the binary can boot all game backups from both XBOX 360 and the original XBOX and also the original copies of both XBOX system games. This mod also allows the XBOX’s drive to work under Windows without any hardware conversion or adaptors, if such a thing seems interesting. XBOX360.net forum posters claim that Microsoft can probably detect if the firmware has been installed, which may be a large deterrent for those interested in giving it a shot.
This firmware still allows you to go onto Xbox Live, but that would be a surefire way to let Microsoft know you are using a hacked firmware. It’s difficult to find a copy of the firmware, but I for one have no remote need for it. Check out the full posting at DailyTech.