How to Downgrade to IOS 4?

Discussion in 'iOS 5 and earlier' started by emaildothales, Oct 13, 2011.

  1. emaildothales macrumors newbie

    Oct 13, 2011
    Anybody can help me to downgrade to IOS4?

    The new IOS 5 made my hongkong iphone's MAPS be in Chinese even in USA.

    I can't survive in China without an english map.

    So please, help me!:)
  2. alexreich, Oct 13, 2011
    Last edited: Oct 13, 2011

    alexreich macrumors 6502a


    Jan 26, 2011
    You need to download the iOS 4.3.5 ipsw (iOS restore file) for your particular phone and put it on your Desktop, then try to restore to it in iTunes.

    Steps to Restore:
    1. Plug in iPhone.
    2. Open iTunes if not already open.
    3. Click your iPhone on the left hand side of the iTunes window.
    4. alt+click Restore (or Shift+Click for Windows)
    5. Find the firmware file you downloaded (it should be on your Desktop) and select it.
    6. The iPhone should start to restore, if Apple is still signing 4.3.5. If they are not signing it, your restore will fail.

    You may have already missed the 4.3.5 signing window, but if you really think that downgrading will fix your problem (I don't think so), you can try.

    Apple was still signing 4.3.5 last night.
  3. christopherpm macrumors newbie

    Oct 15, 2011
    I'm trying this option, but after extracting and verifying the ipsw file, iTunes just sits at "Preparing iPhone for restore" for ages before showing error:-

    The iPhone "iPhone" could not be restored. An unknown error occurred (1604).
  4. Wozza2010 macrumors member

    Nov 9, 2010
    Your stuck

    I wanted to downgrade to ios3 when ios4 had a super slow wifi bug for my iPad. Bottom line I couldn't do it so I was stuck with super slow wifi until they rolled out an update some 4 months later.
  5. flatlined macrumors member

    Jun 9, 2010

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