Downgrade from OS 4.0.2 to OS 3.1.3

Discussion in 'iPhone' started by ColdAsIce, Aug 12, 2010.

  1. ColdAsIce macrumors newbie

    Joined:
    Jan 27, 2008
    #1
    Dear all,

    I purchased an iPhone 3GS with the firmware 3.1.3

    I've recently upgraded my OS not realising the problems afterwards, i wanted to know is there anyway to bypass the Apple Servers to restore back down from OS 4.0.2 to 3.1.3 or that's it i'm stuck with OS 4.0 my whole life!

    Look forward to any responses!

    Regards,

    ColdAsIce

    (Tried different bit's and pieces on the web unable to do so!
     
  2. TW95 macrumors member

    Joined:
    May 26, 2010
    Location:
    London
  3. MrMorden macrumors member

    MrMorden

    Joined:
    Jul 25, 2008
    Location:
    Guatemala
    #3
  4. ColdAsIce thread starter macrumors newbie

    Joined:
    Jan 27, 2008
    #4
    Problems i am encountering,

    Phone heats up very quickly it's very sluggish even when i switch it on the Slider is a bit sluggish,

    I tried the above method it does not work any other way's around this??

    I don't like OS 4.0 i am ruing upgrading to it now!
     
  5. MrMorden macrumors member

    MrMorden

    Joined:
    Jul 25, 2008
    Location:
    Guatemala
    #5
    My mistake...

    I thought you had a 3G. The method above does not work with 3GS.

    It is strange, though. Most people with 3GS say that their phones work fine with 4.0. I played around with a friend's 3GS with 4.0, and I performed great, multitasking included.

    Maybe if you restore it to factory settings and then set it as a new phone... that might do the trick.
     
  6. ToroidalZeus macrumors 68020

    ToroidalZeus

    Joined:
    Dec 8, 2009
    #6
    The 3GS isn't sluggish with iOS4, reset all settings.
     

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