I've been able to play xgd3 games with title updates using Horizon but everytime I try to go online, the game downloads an update and I get the "disc unsupported" error. I've heard that you can go online with title updates. Any help is greatly appreciated.

Update to 3.0, get the special burner IHAS124b can be bought at newegg.com for $20, flash the burner with its special firmware and flash your xbox 360 drive to 3.0 and get around all this BS