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Thread: How to downgrade 4.0 to 3.1.3??

  1. #1
    Default How to downgrade 4.0 to 3.1.3??
    Is there a tutorial on how to downgrade? Could somebody please point me in the right direction?

  2. #2
    iPhoneaholic richhee's Avatar
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    first if you did not save your shsh with cydia before you updated its impossible to downgrade right now if you did save shsh with cydia just run the 3gs downgrade assistant that i attached to the 4th post here

    http://modmyi.com/forums/3g-s-downgr...-com-host.html


    and follow steps good luck

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    What's Jailbreak?
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    fyi, if you have an iphone 3G (not 3GS) it's possible to downgrade without messing with cydia.

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    Retired Moderator iYeow's Avatar
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    Quote Originally Posted by JLEW700 View Post
    Is there a tutorial on how to downgrade? Could somebody please point me in the right direction?
    I just read your other post that you have a 3GS and jailbroken at 4.0.
    The easiest way for you to do is to restore to a custom firmware of 3.1.3 , if from Snowbreeze use 1.5.2, Pwnage tool use 3.1.5.
    Once restored, unlock with Ultrasn0w again.
    Before you do the shift and restore button, make sure you put your Iphone in Recovery mode, you will not get any error in this case.

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