iPhone Dev team has just released ultrasnow 1.2.3 to work with the recently released iOS 4.3.3. Here is how to unlock iPhone 4, iPhone 3GS iOS 4.3.3.

Note:

• These basebands are supported 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00

• These basebands are not supported 02.10.04 / 03.10.01 / 04.10.01 / 05.14.02 / 05.15.04 / 05.16.02

Unlock iPhone 4/ 3GS, iPod touch, iPad.

STEP 1: Jailbreak your iOS device. If not jailbroken click here to jailbreak it.

STEP 2: Open Cydia on your iOS device.

STEP 3: Go to Manage then Sources

STEP 4: Now select “Edit”, then tap on “Add”, and type  http://djayb6.com

STEP 5: Now tap on “Add Source” then tap on Done

STEP 6: Search for “ultrasn0w 1.2.3” in Cydia and install this application. This app will automatically unlock your iPhone so that you can use it with any carrier.

STEP 7: Now all you need to do is just restart your iPhone.

Congrats you have succesffuly unlocked your iPhone 4, iPhone 3GS using Ultrasnow 1.2.3.

You can follow us on Twitter or join our Facebook Fanpage to keep yourself updated on all the latest News!