Ultrasn0w 1.1.1 unlock was released by the iPhone Dev Team and has updated the ultrasn0w unlocking tool for iPhone 4, 3GS and 3G. For better performance and stability improvement this new version has added lots of new tweaks. It will also help with standby battery life in-case, if the phone starts draining the battery too fast. Initially, it was assumed that the issue is because of the jailbreak applications installed after jailbreaking the device. But it was observed that if Ultrasn0w unlock was removed from the jailbroken iPhone then the battery life issue gets disappeared. So, the problem was with Ultrasn0w 1.0.1.

ultrasn0w upgraded to version 1.1-1 we’ve tweaked a few things that may help with standby battery life, you can upgrade via Cydia.

Thus, the Ultrasn0w 1.1.1 unlock for iPhone 4, iPhone 3GS and iPhone 3G was finally released. It works with baseband 01.59.00 for iPhone 4 and basebands 04.26.08, 05.11.07, 05.12.01, and 05.13.04 for iPhone 3G and 3GS. Ultrasn0w 1.1.1 is available at Cydia. [via]