The iPhone Dev TeamĀ warns us again not to update the 3Gs to 3.1 quite yet. They have to find a way to update the firmware without updating the baseband. Their current UltraSn0w program uses the at+xlog crash as an injection vector in exactly the same way as the 3G. If you update, it will update both the firmware and the baseband. So they just ask for a bit more patience.
Here is a video of the 3Gs unlock of the 3.0 update.
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