Despite all of the warnings, I decided to update to 3.0U, and everything is fine. I'm using OpenWii 2.1, and no problems so far with my real copies and backups. I played a real copy of Zelda: TP, and a backup, and they both worked fine. Gamecube games also load. I wouldn't guarantee the same results as I got, though. I didn't take the mod chip out at all, and I also didn't get the warning screen, but my Wii is now 3.0U. It's kinda weird I didn't get the "Modified Wii" warning, but after I updated, I went to the "Update Console" option again, and got the warning, so I decided not to update again. Is there another update afterwards?