The infamous Dev-Team has finally released the much awaited ultrasn0w for iPhone 3G users which will enable you to unlock your iPhone 3G. Follow the steps below to unlock your iPhone 3G running iPhone OS firmware 3.0.
I have received loads and loads of emails regarding all the issues people are facing when trying to unlock and jailbreak iPhone OS 3.0. I have tried my best to answer them by email, and to all the comments in my guides here and here. Here is compilation of all the fixes for the issues that you may be getting when unlocking and jailbreaking iPhone OS 3.0 using ultrasn0w.