Hi friends, This is very urgent, any help would be greatly appreciated. I installed 3.0 on my iPhone 3G, it was working fine for 12 hours or so, and then it suddenly froze. It won't unlock, it won't respond to anything. I've tried resetting it dozens of times, and I've restored it to factory settings with no luck. I really need just basic phone functions to work this weekend, and it's an impossible weekend to talk to anyone at the apple store. If anyone has any advice on how to get my phone back to work, please help. Thanks so much.