How to Put an iPhone Into DFU Mode

Posted by Arjun Komath on August 25th, 2009

If your iPhone needs to be restored to a firmware or for jailbreaking, you will have to put the iPhone into DFU mode. Here are the necessery steps :

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 you 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!