How do I downgrade my iPhone 3GS?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by audiralley, Feb 23, 2011.

  1. audiralley macrumors newbie

    Joined:
    Feb 23, 2011
    Location:
    SoCal
    #1
    I have an iPhone 3GS 8GB and I installed iOS 4.2.1 and I noticed my iPhone is sluggish, I restored it too no avail. How do I downgrade it too 4.1? I have a PC. Thanks. :apple:
     
  2. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #2
    You can't downgrade unless you've backupped your SHSH blobs in a previous version.
     
  3. audiralley thread starter macrumors newbie

    Joined:
    Feb 23, 2011
    Location:
    SoCal
    #3
    What's an SHSH blobs?. I backed up my iPhone before updating, I'm not tech savy..
     
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    If you dont know what an SHSH blob is then obviously you didnt do that prior.
    Apple doesnt allow restoring to previous firmware since the 3GS first came out a year and half ago.
    So you're sol for now, you cannot go down firmware versions on the 3GS and iphone 4.
    Hope the soon to be released 4.3 fixes your issues.
     
  5. audiralley thread starter macrumors newbie

    Joined:
    Feb 23, 2011
    Location:
    SoCal
    #5

    I hope 4.3 gets released soon.
     

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