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Thread: iPhone 4 unlock not working

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I just bought a iPhone 4 with 5.1.1. Already with cydia. Ultrasn0w was already installed but my simple mobile sim isn't working. I downloaded the 5.1.1. Repo Fixer thing but
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  1. #1
    What's Jailbreak? majikcastle's Avatar
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    Default iPhone 4 unlock not working
    I just bought a iPhone 4 with 5.1.1. Already with cydia. Ultrasn0w was already installed but my simple mobile sim isn't working. I downloaded the 5.1.1. Repo Fixer thing but nothing is happening. What am I doing wrong? I also tried putting in my old Gevey ultra s but it just says sim failure or invalid sim.

  2. #2
    My iPhone is a Part of Me
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    what is your modem firmware ? for iphone 4, ultrasnow will only unlock up to 1.59 i believe.
    Last edited by daytonaviolet; 09-27-2012 at 05:18 PM.

  3. #3
    What's Jailbreak? majikcastle's Avatar
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    Modem firmware is 04.12.01 what can I do?

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    2k1
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    Sug Luv Super Moderator 2k1's Avatar
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    Who is your service provider? Ya best bet would be IMEI unlock.

  5. #5
    What's Jailbreak? majikcastle's Avatar
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    At&t

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    2k1
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    Check this thread out he can do it for ya.

    I am doing factory unlocks

  7. #7
    iPhoneaholic
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    AT&T, definitely get an IMEI unlock, either via link posted above or ebay. For the paltry sum, it is well worth it.

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