OK, I have a bit of an emergency here. I'm no stranger to iPhone hacks, I jailbroke my iPhone several months ago and have done updates with PwnageTool, redsn0w, etc. I read up on the 3.1.2 update using the new PwnageTool (3.1.4) and it seemed safe enough so I went ahead and did it... unfortunately, I apparently made a serious mistake. I follwed the instructions... downloaded the official iPhone 3.1.2 firmware, pointed PwnageTool to it, built the custom firmware, and flashed it. One option I didn't notice was the checkbox for "Activate my phone". It was checked by default, but my phone was already activated. The update worked, so my phone is now jailbroken with the 3.1.2 firmware, but now I have no cell phone service! My SIM PIN is blank, my number is not listed, and Network is shown as "not available." I made a terrible mistake... And I knew going in that this was always a possibility when messing with hacked firmware. But is there a way to fix this, or am I SOL?