iPhone 3GS Iphone 3gs won't upgrade with itunes

Discussion in 'iPhone' started by flash1823, Aug 2, 2010.

  1. flash1823

    flash1823 New Member

    Joined:
    Mar 17, 2009
    Messages:
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    Device:
    iPhone 3G (Black)
    I have a 3gs running on 3.1.3 baseband 5.12... I want to upgrade to firmware 4.0 and jailbreak with the new jailbreakme tool that came out yesterday. I tried installing the new firmware through itunes and i get an error message(error message 4). I've never had this problem before, i tried putting the phone on DFU mode and nothing. I have the latest version of itunes as well. Anyone have any ideas???
  2. ripply

    ripply Active Member

    Joined:
    Jul 31, 2009
    Messages:
    1,159
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    Device:
    iPhone 4 (Black)
    Apple stopped signing 4.0. Try updating to 4.0.1

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