Restoring the iPhone will return it to its original state. All your data will be deleted, but it is a solution to many problems like a jailbreak that crashed, a backup who became infected, the image of the apple or the USB cable that appears to iTunes, problem with shakes the iPhone, etc.
Case 1:
The iPhone displays a USB cable to iTunes, you're in recovery mode. Press and hold the power button and watch the iPhone will reboot. If you are still displays the image of the USB cable to iTunes, perform the restoration Method 1 .
Case 2:
You 1013/1014/1015/13 error when you try to restore the iPhone on iTunes. It appears when you are on a recent firmware and want to move to a previous firmware as 2.2.1 to 2.2. You have to go by Method 2.
NOTE:-
- iTunes automatically makes a backup of your data whenever you sync the iPhone with the computer.
- If you have not used iTunes before, follow these steps to make an automatic backup of your data:
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