Previously, @planetbeing (member of iPhone Dev-Team) showed his unlocked iPhone 4 with Ultrasn0w and now another member of the team @MuscleNerd has confirmed that he has successfully unlocked his iPhone 4 with Ultrasn0w. @MuscleNerd showed a picture of his iPhone 4 camped on T-Mobile's network.
This is what @MuscleNerd wrote in his tweet.
Yay, got the 2nd of 3 ideas working. http://is.gd/dxTwO <- my ultrasn0w'd iPhone4. Now @planetbeing and I can compare
Both members of hacking team have successfully unlocked iPhone 4 with different methods but they are still calibrating their tools to fix the remaining bugs. Only one method would be made public depending upon the performance and reliability. The final version of Ultrasn0w tool for iPhone 4 carrier unlock is expected soon. We'll keep you posted. In the mean, you may go through our complete coverage on iPhone 4 by visiting here. [via @MuscleNerd]
If you are on iOS 4.0.1, you may use following guides for jailbreak and unlock.
- Unlock iOS 4.0.1 on iPhone 3G with Ultrasn0w 0.93
- Jailbreak iOS 4.0.1 on iPhone 3G with Redsn0w 0.9.5b5-5