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Thread: UltraSn0w Unlock Gets Updated to Support iOS 4.3.1

  1. #1
    Default UltraSn0w Unlock Gets Updated to Support iOS 4.3.1
    The iPhone Dev-Team has announced an update to UltraSn0w that makes it compatible with iOS 4.3.1 for basebands previously unlocked:

    Weíve pushed out the 4.3.1 compatibility fix for ultrasn0w in Cydia ó itís now at version 1.2.1. If youíre not already at 4.3.1 and you need the unlock, please be sure you understand how to get to 4.3.1 using a custom IPSW that doesnít update your baseband. There are lots of guides for this (like at

    This isnít a new unlock! Itís to allow those who are already unlocked to use FW 4.3.1. It also fixes the signal bar issue for those who arenít using the unlock but retain an older baseband intentionally.

    After installing UltraSn0w 1.2.1 you should reboot your device by using the normal power button and "Slide to Power Off" swipe. USA T-Mobile users need to disable 3G mode in Settings:General:Network.

    To upgrade to iOS 4.3.1 without upgrading your baseband you can use one of these tutorials
    ● TinyUmbrella iPhone 4 (Windows, Mac)
    ● PwnageTool iPhone 4 (Mac)
    ● PwnageTool iPhone 3GS (Mac)

    im on 4.3.1 i4 modem firmware 02.10.04, if you install the update it fixes the signal bars on att

  2. #2
    iPhoneaholic unklbyl's Avatar
    Join Date
    Mar 2010
    USA & Europe
    Thanked 28 Times in 26 Posts

    Cool beans dude! Looks like i will be back to helping people for a few weeks again!

  3. #3
    Definitely fixes signal bar issue, thanks

  4. #4
    No problem!

  5. #5
    Quote Originally Posted by nhoj_yelbom View Post
    No problem!
    I'm glad you could help people by releasing this....
    He who asks a question looks foolish for 5 minutes. He who doesn't ask a question remains foolish forever.

  6. #6
    Last edited by romeoz; 2011-04-19 at 03:47 AM.

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