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원문 게시자: Brad ,

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Try DFU Mode Restore with iTunes on computer. First connect iPhone to wall charger with lightning cable for 10 to 15 minutes to charge it up a bit. Then open iTunes on computer, connect iPhone to computer with lightning cable, perform DFU Mode Restore. Hold both home and power buttons for exactly 10 seconds, release power button but keep holding home button for another 20 seconds until iTunes recognizes iPhone. Restore iPhone. Keep trying to get DFU Mode, it may take a few times to get it just right.

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