When trying to play any game on Xbox Live, it asks me to download an update, but the update fails almost immediately. I get the message
"Can't download the update. To test your connection, open System Settings and select Network Settings, Test Xbox Live Connection.
If the problem persists, go to www.xbox.com/support
3F4A - 0000 - D080 - 0200 - 8007 - 0570"
I've tested the (wireless) connection, which is working perfectly. I've tried running the console over a wired connection. I've deleted and downloaded my profile, just in case it had been corrupted. I've cleared the cache. None of this makes any difference, and I'm getting REALLY frustrated.
Can anyone please help?