I sold my iPhone 4 and I want to use my iPhone 2G until I get my iPhone 4S on Friday. I got a new, unactivated SIM card from AT&T today and put it in my iPhone 2G and restored and I've been stuck at a blank screen in iTunes with "iPhone" displayed. I have already taken the microSIM out of my iPhone 4 and have restored it to factory settings. What do I do? Please and thanks!