The iPhone OS 3.0 unlock is ready. The Dev-Team released their 3.0 jailbreak only a few days ago and now they have released their highly sought after unlock tool, Ultrasn0w. The only catch is that the unlock will not work with the iPhone 3GS because they haven't found a way to jailbreak it yet and the unlock requires jailbreaking, so don't even try.
Unlocking your iPhone 3G should be a fairly simple process since the Dev-Team has posted a complete walkthrough, so just follow their instructions and you should be fine. But, as always, install at your own risk.
