Step One Open iTunes and connect the iPhone to your Mac. Step Two Press and hold the Home button and the Sleep/Wake button at the same time.
Step Three After exactly 10 seconds release the Sleep/Wake button. Continue holding the home button until your iTunes pops up a message telling you that it has detected an iPhone in recovery mode.
The iPhone screen will remain black like this:
Note: It may take a few attempts to get your iPhone into DFU mode. Generally, I hold down both buttons then release the Home button just before I think the Apple logo would appear. If you are still holding both buttons down and you see the Apple logo you are holding them down for too long! Notify me of follow-up comments by email. Notify me of new posts by email.
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