1. As shown in the following image, we press the power button at the top of the phone to wait for the iphone screen to turn off when the computer is turned off.
2. After shutdown, we do not turn on the Apple iphone and the computer with the original data cable link up (Recommended reading: How the Apple phone to connect to the computer)
3. Now we need to press the operation Fast to the Apple mobile phone DFU recovery mode
①, in the shutdown state we first press the "power button" does not let go, waiting for the Apple phone screen out an apple icon;
②, appear white Apple when we press the Apple Phone's home button, then wait to the phone screen black screen;
③, okay here the Apple phone black screen, we release the power button, but the home key can not be loosened;
So the iphone is entering the DFU recovery mode.
4. Now that we've turned on the itunes software on our computer, itunes will prompt our device to be in a recovery mode
5. Then I clicked on it and began to help us restore the iphone.