The iPhone Dev Team posted some news during the last days. First of all they show us they are able to run a modified 3G baseband, although it fails integrity checks (see picture). And obviously they coded a baseband tool that allows execution of custom commands on the baseband.
Their silent and evolving works seems to be succesfull. Both these steps are major steps into a custom unlock. Anyway we don’t have information how long it will take until the final unlock, but we expect it to be aired before Chrismas.
Picture and video is courtesy of iPhone Dev Team.