Luckly for iPhone 2G users that the great iPhone Dev Team released a brand new Redsnow version working perfectly in combination with Jailbreak and Unlock iPhone 2G along the iPhone Touch.
Step by step procedure to unlock the Firmware 3.0 on iPhone 2G using Redsnow:
How to Unlock Firmware 3.0 using Redsnow for iPhone 2G | TechFlipper
Step by step procedure to unlock the Firmware 3.0 on iPhone 2G using Redsnow:
How to Unlock Firmware 3.0 using Redsnow for iPhone 2G | TechFlipper