I need a lot of help because I totally messed up my iphone. I have the Black 16GB iPhone 3G. I got it off eBay. It was unlocked and everything, I never used it as a phone though because I had sprint. it was just such a low price I couldnt resist..lol. So i just used it as an iPod. I read about the iPhone 3.0 Firmware released and I updated my iphone. Everything was going good until at the end of the upgrade, I got an error message saying that I need a sim card so i can activate the phone and use its features. But i dont have any sim cards. So is there a way to activate the phone with no sim card. All i can do with the iphone is make emergency calls. I cant do anything else with it. I tried to add a different firmware, but it always comes up with an error message. So what can I do? I appriciate any help.