Hey, try having someone send the phone a text message. It got mine unstuck this morning. Still had minor issues with AT$T signal but that was with both upgraded and unchanged phones so it was system wide here in the northwest.
I'm in the UK and I had been trying to update to 2.0 for pretty much the whole day. iTunes kept telling me that I already had the latest software installed, but at around 1am I was just about to go to bed and decided to give it one last go... Success!!! The update installed and everything is great!