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Thread: Downgrade 3GS from 4.0 to 3.1.2

  1. #1
    Default Downgrade 3GS from 4.0 to 3.1.2
    I have a old bootrom iPhone 3GS currently running jailbroke 4.0. I want to downgrade it to 3.1.2/3.1.3 either one is fine.

    Now I only have shsh for 3.1.3, This phone was jailbroken at 3.0 and from then on only upgraded using custom ispw's.
    What would be the easiest way to downgrade it? Can I just use a custom firmware to downgrade it? Do I have to have the SHSH files?

    Thanks.
    If I can't mod it...I don't want it.

  2. #2
    Superbad Modder-ator Simon's Avatar
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    I believe since you are jailbroken you can load a custom 3.1.2 or 3.1.3 on it without the need for SHSH files. To go stock firmware you can only go to 3.1.3 since that is the only SHSH you have.

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