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Thread: iphone 3gs enter DFU mode by its self

  1. #1
    Default iphone 3gs enter DFU mode by its self
    Ok so my son has a iPhone 3GS running iOS 6.1.3 which keeps randomly entering DFU mode

    It's unlocked but not Jailbroken


    After googling the problem I found that it could be a battery issue.

    I then had the battery replaced.


    Some suggestions said that it could be corrupt iOS software.

    I've set up as new several times via iTunes and icloud. Last night I did a DFU restore and installed a back up from icloud


    Other suggestions talked of a rogue app that the phone did not like.

    The last time I set up as new I did not install any apps or but a back up on, apart from facebook, whatsapp and flappy bird(hate this game)


    When it does randomly turn off and I plug it into the PC and start iTunes it detects the phone in a DFU mode

    If I hold down the home button and the on/off button for 20 seconds the phone restarts as normal



    Help please any ideas to solve this problem

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  4. #4
    Do you have any video of that? I’d love to find out some additional information.

  5. #5
    No video. Turns out the problem was the silicone cover which was causing the phone to overheat.

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