STEP 1: Download iTunes and connect your iPhone into your computer.
STEP 2: Hold down the power button for 3 seconds.
STEP 3: Without releasing the power button, hold down the home button for 10 seconds.
STEP 4: Without releasing the home button, release the power button BUT KEEP holding the home button for 30 seconds.
STEP 2: Hold down the power button for 3 seconds.
STEP 3: Without releasing the power button, hold down the home button for 10 seconds.
STEP 4: Without releasing the home button, release the power button BUT KEEP holding the home button for 30 seconds.