Xbox update preview

Hi, was just looking for anyone who has a spare code for the xbox update preview. I need one as me and my friend play on forza alot but now cant invite/talk. I tried putting the GT on the list, but nothing happened. Any help would be very much appreciated

Might try reading existing information before starting another thread: http://forums.forzamotorsport.net/turn10_postst5714_Workaround-For-X1-Update-Beta-Tester-Non-Beta-Testers.aspx