How does one downgrade from iOS4 back to 3.1.3?

Discussion in 'iPhone' started by tekksan, Jun 25, 2010.

  1. tekksan macrumors regular

    Joined:
    Mar 27, 2009
    #1
    How does one downgrade from iOS4 back to 3.1.3 on a 3G phone?
     
  2. blurb23 macrumors 6502a

    Joined:
    Feb 25, 2007
    #2
    Search for iPhone 3G (or 3GS) 3.1.3 IPSW on Google.

    Option + Click on Restore in iTunes, and select that firmware bundle.
     
  3. deeddawg macrumors 604

    Joined:
    Jun 14, 2010
    Location:
    US
    #3
    That'd work great if Apple was still signing 3.1.3 as valid.

    See here for a way to bypass Apple: http://www.saurik.com/id/12#howto
     
  4. blurb23 macrumors 6502a

    Joined:
    Feb 25, 2007
    #5
    Oh, just kidding.

    I didn't know Apple flagged it. My b.
     
  5. deeddawg macrumors 604

    Joined:
    Jun 14, 2010
    Location:
    US
    #6
    No biggie, I meant that just as a funny, not a slam. No way to know if you hadn't tried it and found that apple closed the door to go back. ;)
     

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