Other than NOT being in Airplane Mode (several threads say this will cause problems), any other settings that need to be a certain way to avoid problems? Does my 3G need to have a data connection of it's own to be able to complete the upgrade (in other words, if I'm not in range of a cellular network... I can use wifi through Internet Sharing to "connect" to the internet) properly? If I have a legit copy of 2.2.1 firmware and I have a lot of problems after upgrading to 3.0 as some users are experiencing, can I easily reinstall (ie; downgrade) the 2.2.1 firmware and restore from a recent backup? Thanks for any info!