Hi, I have an iPhone 3gs and just recently jailbroke it using purplera1n on windows xp. All went smoothly and I installed Cydia by freeze. I then added the repo666.ultrasn0w.com source to my list and downloaded it to my phone. I turned off 3g (because I am on t-mobile) and rebooted my phone. When I pop in my sim, it shows the t-mobile name and bars but the bars always fall to zero and I cannot make calls nor text? What is wrong? I have tried multiple times and nothing ever changes.