Good news for those who has a locked iPhone 4 or if you’ve accidently updated to iOS 4.1+ and lost your ultrasn0w unlock. Sherif Hashim, recently replied the tweet of one of his followers that iPhone 4 Baseband 2.10.04 Unlock is possible. He has managed to crash this latest iPhone 4baseband and currently Devteam is working on it to port it on ultrasn0w. We are still waiting for official announcement date.
Here is the tweet from @sheriff_hashim
The iPhone Help
The iPhone Help