The wait is over ladies and gentleman. The Dev-Team has released their latest software to unlock iPhone 3G's running the 3.0 software. Again, it is important to remember when a 3G S jailbreak application is released do not use Ultrasn0w with the iPhone 3G S.
To unlock your iPhone 3G 3.0 is as simple as jailbreaking your device, downloading Ultrasn0w via Cydia, and running the software. For full detailed directions be sure to check out the Dev-Teams blog.
Before you decide to jailbreak and unlock there are a few things you should know. If you do not know what you are doing - please do not attempt this as there is a possibility you can permanently damage your device. Regarding jailbreaking, remember most of the apps available will not work on 3.0 due to the developers not updating their apps yet. So be careful on what you install.
Want to learn more? Visit Jailbreak Central in TiPb forums.