Last week,the Dev-Team released the Ultrasn0w 1.0-1 which is undoubtedly the first software ever to unlock the iPhone 4G.The Dev-Team have just released an updated version-Ultrasn0w 1.1-1 for improved standby battery life.

The Dev-Team announced the new version of Ultrasn0w via Twitter (See the picture below):


[How To]Unlock Using Ultrasn0w 1.1-1: Follow this tutorial here.


Ultrasn0w 1.1-1 can be installed from Cydia on iPhone 3G/3GS/4G users to unlock their iPhone on iOS 4 or iOS 4.0.1 or earlier (upto iPhone OS 3.0).

If you have  already  unlocked with Ultrasn0w then launch Cydia>Go to Changes to install the new version.

Do let us know how it goes.