There has been a lot of buzz about the 4.2.1 jailbreak lately, but the unlock has been missing in action for some time. However we have some good news for users who are waiting for an Unlock their iPhone 4 on iOS 4.2.1, baseband 2.10.04 and 3.10.01. The famous Egyptian hacker of iPhone Dev Team Sherif Hashim has replied a user on Twitter that the exploit for Unlocking Baseband 2.10.04 and 3.10.01 is working without any flaws.
the one I found is working for both
The developer has not confirmed how this Unlock tool will work or when he will release the tool but it is rumored to be released soon after the release of Apple’s new iOS 4.3, iOS 4.3 is currently in beta state and expected to be released to public on 4th March at the famous Yerba Buena Center for the Arts in San Francisco.
We will have more on it as soon as we get more information on this. Stay tuned for that!