iPhone 3G is Now Unlocked for Life, on Baseband 06.15.00

firmware update starting iOS 4.3, your iPhone 3G will remain unlocked for life. MuscleNerd also confirmed this in a tweet:

“Because there’s no 4.3 beta for iPhone3G, it’s effectively unlocked for life via the 06.15 ultrasn0w unlock”

Unlock for iPhone 4 iOS 4.3 Baseband 04.10.01 in Works!

MuscleNerd, the man behind UltraSn0w unlock confirms that iPhone 4 iOS 4.3 baseband 04.10.01 has some possible vulnerable commands that may lead to an unlock for iPhone 4 baseband 04.10.01. Dev-team is working hard to invoke those commands to unlock iPhone 4 on iOS 4.3.

Unlock iPhone 4, 3GS iOS 4.3.3 with UltraSn0w 1.2.3

Important

• Compatible Basebands: 01.59.00 | 04.26.08 | 05.11.07 | 05.12.01 | 05.13.04 | 06.15.00

• Not-Compatible Basebands: 02.10.04 | 03.10.01 | 04.10.01 | 05.14.02 | 05.15.04 

1. Open the Cydia;
2. Let the Cydia Load and Update if it prompts you;
3. Go to Search tab and search for ultrasn0w and install it.
4. Installing UltraSn0w will unlock iPhone 4 or iPhone 3GS iOS 4.3.3 with baseband 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00. Once the installation is completed, reboot your iPhone.

Unlocked iPhone 4

The 16GB iPhone 4 black model starts at $649 and the 32GB variant costs $749. Factory unlocked iPhone 4 are available in both black and white.