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  1. #1
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    Feb 2011

    Default [How-To] Unlock iPhone 4 / 3GS on iOS 4.3.3 Using Ultrasnow 1.2.3

    [How-To] Unlock iPhone 4 / 3GS on iOS 4.3.3 Using Ultrasnow 1.2.3


    Ultrasn0w 1.2.3 has been released today to make the unlock compatible with iOS 4.3.3 on iPhone 4 and 3GS, running on the old baseband.

    It should be noted though that this release of Ultrasn0w is not a new unlock for iPhones with newer basebands, instead, it only fixes the compatibility issues on the existing devices, which are jailbroken (with preserved basebands: 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00) on iOS 4.3.3.

    For iPhone 3GS Only: How to Update iPhone 3GS to 06.15.00 Baseband for Unlock: Ultrasn0w 1.2.x unlocking requires that your iPhone 3GS is jailbroken with 06.15.00 baseband. Follow the complete guide posted here (with PwnageTool) or here (for Redsn0w) to update your iPhone 3GS baseband to 06.15.00 and jailbreak it on iOS 4.1 / 4.2.1 before proceeding with the following steps.

    Note: Updating iPhone 3GS baseband to iPad’s 06.15.00 might result in loss of GPS functionality.

    Step 1: After confirming the baseband now jailbreak the iPhone with the help of the jailbreak tool , Redsnow is simple one but as i mentioned above it is little bit tricky so i personally s***est using[Link removed - linking to commercial or competing websites is strictly forbidden.]

    Step 2: Once you are done with the jailbreak, you can now unlock your iPhone on the supported basebands using Ultrasn0w 1.2.3 from Cydia. To do this:

    Start “Cydia” on your iPhone.
    Touch on “Manage” tab on the bottom.
    Now touch on “Sources”.

    Touch on “Edit” and then on “Add”. You will be prompted to enter a url source as seen in the screenshot below. Type “” and touch on“Add Source” to add this repo if you haven’t already.

    Cydia will now automatically update your sources by following a series of automated steps.

    After installation is completed. 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 3: Now simply restart your iPhone and voila! you should now have a fully unlocked iPhone 4 or 3GS, running iOS 4.3.3 !
    Last edited by Silver; 15-05-2011 at 10:44 AM.

  2. #2
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    Oct 2008
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    why do u even need 2 jailbreak it does it help just personalize thats all...