Update problem! Pls help

I have a big problem please someone help me.

First of all i have an older version of Ixtreme really dont know wich one. But my console is banned anyway so doesnt really matter. But i used the 3rd wave disabler and UFC undisputed 2009 did just work fine until i got to that updating issue wich i saw more people having but that wasnt really a problem because i Also saw a solution of just updating your system trough a USB so i downloaded the new Fall update

(http://download.microsoft.com/download/D/1/8/D181EE58-DE70-4484-936B-0E9161CCD6B2/$SystemUpdate_Fall08_7371.zip)

But here is where the trouble starts. When i insert the USB it says update found need restart..... so i did... but when it tries to install it says " Can't process update contact xbox support bla bla bla "

I have tried more updates and burned like 5 dvd's and cd's but nothing seems to work. The last update i ever installed was this one :

" NXE Full Dashboard + Avatars [Offline Install]-Discovered.torrent" installed.

I was thinking about installing ixtreme update but i dont think that would really help me out of this situation right now since it has nothing to do with it ?!?!!?

Please suggestions for this desperate person wanting to play UFC