OK here's the deal. I recently was lucky enough to win an 2G iPhone through a YouTube giveaway, and it arrived today. Here's the problem, I was told that I would be able to jailbreak and unlock etc. using QuickPwn or redsn0w but I'm stuck on a "no sim card installed" screen on the iPhone and I can't seem to get past it. The problem being that I don't have AT&T, therefore have no sim card that will work (i was just planning on using it as like a glorified iPod or maybe on t-mobile). So, since I cannot get into the phone, I can't check the firmware. I made a guess and assumed I was dealing with 2.2, so I downloaded redsn0w and a 2.2 firmware file, but when I put it into redsn0w it said "unable to recognize ipsw". Also, I cannot restore with iTunes, because iTunes says I need to put in a SIM first. Is there anyway I can get past the sim thing? And if not I have another idea, I was planning on using a friends sim just to get past that screen so I could jailbreak, but if I did that would it show on my friends at&t that he was now using an iPhone and be charged any extra fees or anything? Thanks!