Hey there, I have an early appointment in the morning with someone who will do this for $20. I was hoping someone here can save me the money and explain it to me. I have an Iphone 2G that is running firmware 3.1.3(the latest for the 2G). It is not activated, thus it only has "slide for emergency". I have no At&t sim cards I can put inside of it that have the "Data Plan" on it. I have tried to downgrade it to firmware 2.0 but I get an error "20". So basically, does anyone know how to first activate it? I can unlock it myself afterwards. THANKS IN ADVANCE!