Okay I am very frustrated because I just cant get anywhere.. I bought a 3G used and had to have it unlocked ($60)by a cellular repair place. They told me not to do any updates or the phone would lock again. Then I took it down to Tmobile to hook it up. Everything seemed cool but when I plugged it into my PC and turned on I tunes, I couldnt sync or do anything on my Itunes because it said that my SIM card is unsupported. So I posted a couple threads and was told to update my firmware from 3.0 to 3.01 then jailbreak using redsnow and then DL ultra snow and Wah Lah.... But I was afraid to update my firmware because of what I was told by the cell place so I did the Jailbreak and it worked just fine but I still can NOT sync with Itunes. Now one person who responded to my thread told me to update to 3.0.1 by going to Itunes>devices>iphone>updates. But when I plug my iphone into Itunes I cant do sh*t cause MY SIM CARD IS UNSUPPORTED!!!! can anyone offer any advise that might help???