(adsbygoogle = window.adsbygoogle || []).push({}); when u have a xbox360 with 8599 dash isnt it possible to edit the system update 9199 u downloaded from xbox.com with the files of the 7371 system update and make your xbox360 see it as the 9199 update?

(dont flame me for my crappy english) lol

Nope. Very short answer.