Dear all, First of all, thanks for checking out my post here. I really appreciate the helpful attitude of the people on this forum, you all rock! So here's what I got. I have an iPhone 1st Generation, Firmware version 2.2.1. After some research I found my best solution to unlock it form AT&T to use on T-Mobile was to go ahead and use QuickPWN. I downloaded the necessary files and went through with it. I now have Cydia and the Installer on my phone, everything went just fine, didn't brick it as far as I can tell. Now I have an old AT&T SIM card and the one I want to use, my T-Mobile SIM card. When I install the AT&T Card or without a card, everything works fine, I can't make any calls or search the web without an internet connection (due to my using an old AT&T SIM which is from an old account with AT&T) it basically now acts like an iPod Touch. Now, when I put in my T-Mobile sim I immediately get the notice: Different SIM detected Please connect to iTunes Here's the funny part, if I slide over for an emergency call, I can see full bars with T-Mobile! I can call anyone, but I just can't access anything else besides this Emergency Call thing. Even if I dial in, for instance my wife's phone number it brings up her beautiful face in the background while making the call! But I can't get past this screen with my T-mobile SIM card in. Now one issue may be that the T-Mobile SIM is old, it's one I've had since I used my Sidekick back in the day, so it's about 5 years old. But if that were the issue, I shouldn't be able to make phone calls with it, right? I can make calls clear as day, can't access my phone book or anything like my home screen (just dial them in from the Emergency screen), but I can make phone calls! Oh, and just so it's known, I don't think it's "bricked" because as soon as I take the SIM card out, it works just fine in "iPod Touch Mode" (No Network, no phone calls no SMS, just music, browser when I have wifi, etc) I tried searching for this exact problem and couldn't find that anyone else had it. Do you think you can help me out?