Restore iPhone from 4.0 to 3.12

Discussion in 'iPhone' started by N4CQD, Jul 2, 2010.

  1. N4CQD macrumors member

    Joined:
    Jun 27, 2010
    #1
    How do I restore my iPhone from 4.0 back to 3.12?
     
  2. eezing macrumors 6502

    eezing

    Joined:
    Oct 29, 2008
    #2
  3. N4CQD thread starter macrumors member

    Joined:
    Jun 27, 2010
    #3
    Wrong Place??

    This is a question about the iPhone....this is the iPhone forum, so why is this the wrong place for this??
     
  4. sash macrumors 6502a

    sash

    Joined:
    Nov 23, 2004
    #4
    restore your iPhone's firmware to 312, then, if it's stuck into Connect to iTunes screen, run RecBoot, and then unlock with blackra1n if you have to. In my case, I didn't need running RecBoot, blackra1n did the thing just great. Everything takes 10-15 min with the firmware restore being the longest part.
     
  5. N4CQD thread starter macrumors member

    Joined:
    Jun 27, 2010
    #5
    Didnt work

    I followed the instructions shown on the URL:
    http://forums.macrumors.com/showthread.php?t=954719
    But it failed to load the previous version, I downloaded and tried v 3.1, 3.12 and 3.13) got a few minutes into each of them, then told me that it failed. I never got to the point where I could run RecBoot.
    Would appreciate any other suggestions. Thanks.
     
  6. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #6
    If its a 3G you can just download an official 3.1.2 ipsw and restore to that thru itunes.
    If you're on 3GS you cannot downgrade your firmware unless you have your SHSH's saved for the particular firmware version.
     
  7. N4CQD thread starter macrumors member

    Joined:
    Jun 27, 2010
    #7
    Shsh?

    Good info. Two questions.
    What does SHSH stand for?
    How can I check whether I did save SHSH?
     
  8. detroit1 macrumors regular

    Joined:
    Jul 11, 2008
  9. saxon48 macrumors 6502a

    saxon48

    Joined:
    Jun 14, 2010
    Location:
    Barad-dûr
    #9
    The 3.1.3 firmware is ridiculous when trying to downgrade, I gave up and just went to 3.1.2
     
  10. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #10
    http://www.saurik.com/id/12
     

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