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Discuss unlocking 3.1.2 with 2.28 BB - late upgrader at the iOS 3.x (iPhone OS 3.x) - Hackint0sh.org; Hi, I'm a late upgrader with a problem I created a custom ipsw and upgraded ...
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    Question unlocking 3.1.2 with 2.28 BB - late upgrader

    Hi,
    I'm a late upgrader with a problem
    I created a custom ipsw and upgraded my iphone 3G to 3.1.2
    the Baseband wasn't upgraded and is 2.28.00
    can the phone be unlocked with ultrasn0w ? is it safe ?
    can i upgrade my modem to 4.26 ? should i want to ? any new features?
    I'm seeing some slowness in my apps after upgrading to 3.1.2. is that common ?

    Thanks !
    Last edited by gadys; 03-29-2010 at 11:21 PM.



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    with 2.28.00 BB you need to unlock it with yellowsn0w and not ultrasn0w.

    with 4.26.08 BB you need to unlock it with ultrasn0w.

    FWIW, 4.26.08 is the stable baseband to be used use with ultrasn0w and it is safe.

    If you want to continue to use yellowsn0w, you can.
    If you want to have new baseband then you have to restore your iphone 3G to stock firmware 3.0. After that you can jailbreak with pwnagetool and use custom fw 3.1.2.

    DO NOT RESTORE your phone with stock firmware 3.1.2 !!! - that will bring your BB to 05.11.07
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