There are times you may want to enter DFU Mode, here are the basic steps to get into DFU mode. You have to get the timing right.

1. Turn off your phone (see figure below).

Power down the iPhone

2. Hold down both the Home and Power buttons for exactly 10 seconds, then release the Power button and keep holding the Home button (see figure below).

Hold both for 10 seconds, then release the Power button

3. After another 10 seconds, let go of the Home button as well (see figure below).

Hold Home button for another 10 seconds, then release

In DFU mode, there should be nothing on the iPhone screen except backlit blackness, as shown in the figure below:

DFU Mode: screen is lit, but black

On Windows, you should hear two USB beeps—one “device disconnected” beep after the first 10 seconds, then one “device connected beep” once you enter DFU mode. On Windows XP, you should also see a device identification bubble in the taskbar (see figure below).

Taskbar notification in Windows XP

Once you’re in DFU mode, iTunes should give you the same recovery mode message it gives with the normal recovery mode (see figure below).

iTunes detecting the iPhone in DFU mode

Next, option-click (Mac) or shift-click (Windows) the Restore button. This will allow you to restore to the firmware of your choice. A link to all of Apple’s firmware files can be found in here, and you can either download a custom firmware online or create your own with jailbreaking tools like Pwnage (see figure below). If you simply click “Restore” and allow iTunes to choose the firmware, you will virginize your phone.

Loading a firmware image

If you entered DFU mode and later decide to exit, here are the steps you need to take to get back.

Similar Posts:

• iPhone Exit DFU Mode
• Enter iPhone Recovery Mode
• iPhone DFU Mode
• Exit iPhone Recovery Mode
• iPhone Recovery Mode