Been on there a few times mate, i was just wandering at what stage the Xeno comes in, and what stages it cuts out, im assuming it just saves me constantly opening up the 360 for future firmware updates, and it also has options regarding HD transfers from 360 to PC
Also, yes, opening the case will invalidate the Warranty, etc etc, and Xbox live isnt picking up on the latest Ixtreme firmware which stops backups which are not correctly patched from booting – but obviously, it may change in the future, as it has done in the past – but so far, that version is safe 🙂