I recently had problems downloading the newest system update. I got the error code 397F-0000-0080-0300-8007-045D. I did as the Support page told me, I took out the hard drive and then put it back in. It still didn't work. I was finally able to to update the system by using a USB-stick. The problem is that when I now try to play CoD 4 I get logged out of Xbox live, seconds after I get asked to update the game. The update was on 2 Mb so memory wasn't the case (I have about 235GB), I get almost the same code as before and nothing else helps. Can you please help. I really wan't to play CoD 4 Multiplayer.