How to Put an iPhone Into DFU Mode

[rajeshchiyyan]

DFU means Device Firmware Update. If a restore using Recovery Mode doesn't work you will want to use DFU Mode as a last resort. When placing your iPhone into DFU Mode it does not load the OS before attempting the restore

To put the iPhone into DFU mode so you can do an iTunes firmware restore follow these steps:

Step One
Open iTunes and connect the iPhone to your Mac or windows


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!

 

[Zeayufay]

put iPhone into DFU mode

I did as the steps below to put iPhone into DFU mode:

1. Plug your device into your computer

2. Turn off the device by holding the Sleep/Wake or Power button and swiping it off

3. Hold the power button for 3 seconds

4. Begin holding the Home button without releasing the Sleep/Power button for 10 seconds

5. Release the power button and continue holding the home button until you get a popup from iTunes that your device is recognized as being in recovery mode

That’s it, you’re in DFU mode. If you get stuck in DFU mode and need to get out, just hold the power button and home button simultaneously until the Apple logo appears.

 

[Queeniye]

I did as the steps below to put iPhone into DFU mode:

1. Plug your device into your computer

2. Turn off the device by holding the Sleep/Wake or Power button and swiping it off

3. Hold the power button for 3 seconds

4. Begin holding the Home button without releasing the Sleep/Power button for 10 seconds

5. Release the power button and continue holding the home button until you get a popup from iTunes that your device is recognized as being in recovery mode

That’s it, you’re in DFU mode. If you get stuck in DFU mode and need to get out, just hold the power button and home button simultaneously until the Apple logo appears.

Restoring your iOS device
Connect your device to your computer.
Select your iPhone, iPad, or iPod touch when it appears in iTunes. Select the Summary tab, and click the Restore button.
Click Restore.

After a restore, the iOS device restarts. You should then see "Slide to set up". Follow the steps in the iOS Setup Assistant.

If needed, restore your device from a previous backup.