Yesterday, the dev team released their carrier unlock for iPhone 3g and 3gs devices. Many of you were waiting for this and assumed it was another exploit that would bring in a new carrier unlock.
Interestingly enough, it’s actually not. It turns out the ipad baseband hardware is the same hardware in 3g and 3gs devices. But the baseband is a higher number 6.x. Therefore, it seems that we can take the ipad baseband and install it on iphones then use the same unlock in ultrasn0w from last time. Unfortunately, this doesn’t work on iphone 4′s. Therefore, the unlock is for all iphone 3g, 3gs, and ipads running 3.2.2 or lower. iPhone 4 users, there’s no unlock available here nor will it be likely that one will be coming anytime soon.
Keep in mind, if your device is a 3gs new bootrom that a 4.2.1 firmware jailbroken will be tethered so you should not update to 4.2.1 due to this. However, 3g owners and 3gs with old bootrom need not worry about tethered jailbreak and are free to update.
The unlock can be installed directly from redsn0w or from pwnage if you are planning to make a new pwnage bundle.