When all else fails, recovery mode lets you restore your iPhone, iPod touch, or iPad in iTunes.
If updating your iPhone, iPod touch, or iPad through Software Update simply isn’t working, you’re trying to get off a bad beta, or your device has simply become completely unresponsive and nothing else is working, recovery mode might be just what you need to get things going again. It’s painful, so it’s more of an almost-last resort than a first step. It’s not complicated, however, and knowing about recovery mode is important if you ever need it. How to put your iPhone or iPad into recovery mode
Turn Off your iPhone, iPod touch, or iPad if it isn’t off already.
Press and hold down the On/Off button on the right side (iPhone 6 or later) or top (all other iPhones, iPods, and iPads) for 3 seconds.
Swipe the slide to power off confirmation slider to the right.
Press and hold down the Home button on your iPhone, iPod touch, or iPhone.
Plug your iPhone, iPod touch, or iPad into your Mac or…

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