Ultrasnow 1.2.3 Unlocks iPhone 4 and iPhone 3GS iOS 4.3.3

Ultrasn0w 1.two.three can unlock iPhone 4, 3GS iOS four.three.three firmware. This UltraSn0w unlock for iOS four.three.three comes with older baseband supports

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 (Dev-Team is working on Downgrade Baseband method)
• iPhone 3GS (not-compatible baseband) users can upgrade to 06.15.00 baseband that is unlockable (Here is Tips on how to). Upgrading your iPhone 3GS baseband towards the 06.15.00 iPad baseband hack to unlock May perhaps trigger you to lose your GPS!

Let’s Unlock iOS 4.3.3 with UltraSn0w Unlock on iPhone four and iPhone 3GS.

Unlock iPhone four, 3GS four.three.three with UltraSn0w

***T-Mobile USA users please disable 3G network initially. (Settings >General >Network and turn the “Enable 3G” switch to OFF.)

Your iPhone four or iPhone 3GS have to already jailbroken on iOS four.three.three. Jailbreak iOS four.three.three guides are linked in the bottom.

Assuming that your iPhone four or 3GS is jailbroken on iOS four.three.three;

Open the Cydia;

Let the Cydia Load and Update if it prompts you;

Go to Search tab and search for ultrasn0w and install it.

Installing UltraSn0w will unlock iPhone 4 or iPhone 3GS iOS four.three.three with baseband 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00. When the installation is completed, reboot your iPhone.