iOS 5.1 Upgrade - Unknown Error (11)

Discussion in 'iPhone Tips, Help and Troubleshooting' started by ParryD, Mar 15, 2012.

  1. macrumors member

    Joined:
    May 16, 2010
    #1
    Hi,

    I have a 3GS Factory Unlocked running on iOS 4.1.

    I went for 5.1 update [Shift+Update] for the device but it stopped with the following error message:

    On clicking more information tab in the error message was directed to the following page:

    iOS: Resolving update and restore alert messages

    The device remains in DFU Mode and get the following message on connecting to iTunes;

    Got the device out of DFU Mode using tinyumbrella, again got the same message on updating.

    I had updated my iTunes to 10.6 prior to connecting the device.

    Pls assist resolving this error message.
     
  2. thread starter macrumors member

    Joined:
    May 16, 2010
    #2
    Disabled antivirus, used another USB port & tried doing a restore [shift+restore] but still no luck; got the same error message.
     

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