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Thread: Can I upgrade my iphone 3gs [3.1.3] to 4.0.1

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Hi everyone, I have an iphone 3gs on firmware 3.1.3 jailbroken with spirit. the modem firmware is 05.12.01 ... i dont know if that makes it new or old bootrom
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  1. #1
    What's Jailbreak?
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    Default Can I upgrade my iphone 3gs [3.1.3] to 4.0.1
    Hi everyone,

    I have an iphone 3gs on firmware 3.1.3 jailbroken with spirit.
    the modem firmware is 05.12.01 ... i dont know if that makes it new or old bootrom
    anyway i wanted to know if i could upgrade it to a jailbroken 4.0.1 firmware

    thanks in advance

  2. #2
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    I'm in the exact same boat with my 3gs. Same modem firmware and 3.13. Can someone please answer? I'd really appreciate it too!

    Thanks!

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    Up... Anyone?

  4. #4
    My iPhone is a Part of Me
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    As far as what I have seen, you can not upgrade a Spirit jailbroken phone to a pre-jailbroken firmware. If you want to stay jailbroken, just leave your phone alone until a new Spirit or other jailbreak solution is released for 4.0/4.0.1

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