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Thread: Black Screen iphone

  1. #1
    Question Black Screen iphone
    So, not sure what has happened to this 16g gen1 phone but it's black screened with "invalid calibration data in device tree BSD root md), major 2, minor 0" as the message.
    Phone came to me as a locked item in recovery mode and initian interogation revealed no firmware version installed. Restore ti 1.1.4 via iTunes 7.5 failed to reload. Can anyone help me with a fix ?
    Tkx Ricardo2008

  2. #2
    Livin the iPhone Life SundayDuffer's Avatar
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    hmmm...put it in DFU mode and do a restore....do a search of how to put your phone on DFU mode on this site. Try that.

  3. #3
    Tks, tried that but when restoring get the dreaded failed error 1011 message. thinking abt re-loading itunes... but unsure what version of firmware was originally loaded on the phone. any suggestions

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