The DFU "Device Firmware Update" mode is a kind of "super recovery" mode. You will use this if your iPhone experiences a big crash preventing access to Recovery mode, or when a reset by Recovery mode fails. Formerly widely used for Jaillbreak, this mode is now mainly used to debug your iPhone.
Put an iPhone X, iPhone 8, iPhone 8 Plus in DFU mode
- Launch iTunes, connect your iPhone to your computer, then turn off your iPhone (press and hold the right side button and one of the volume buttons simultaneously, then drag the slider Switch off).
- After your iPhone is turned off, press the right side button and the volume down button simultaneously for 5 seconds, then release the right side button and keep pressing the volume down button for about 5 seconds
- If you were successful, your iPhone screen should be turned off, and iTunes should automatically open with a window stating that your iPhone is in recovery mode. If not, you need to repeat the above steps.
Put an iPhone 7, iPhone 7 Plus in DFU mode
- Launch iTunes, connect your iPhone to your computer, then turn off your iPhone.
- After your iPhone is turned off, press the right side button and the volume down button simultaneously for 10 seconds, then release the right side button and keep pressing the volume down button for about 5 seconds
- If you were successful, your iPhone screen should be turned off, and iTunes should automatically open with a window stating that your iPhone is in recovery mode. If not, you need to repeat the above steps.
Put an iPhone 6, iPhone 6 Plus or older in DFU mode
- Launch iTunes, connect your iPhone to your computer, then turn off your iPhone.
- After your iPhone is off, press the right side button and the home button simultaneously for 10 seconds, then release the right side button and keep pressing the home button for about 10 seconds
- If you were successful, your iPhone screen should be turned off, and iTunes should automatically open with a window stating that your iPhone is in recovery mode. If not, you need to repeat the above steps.
Find other tutorials to help you debug and repair your iPhone:
- What to do when you have forgotten your iPhone passcode?
- How to unlock an iPhone?
- How to know the state of health of your iPhone battery?
- How to recover deleted SMS on iPhone?
- How to unlock iPhone without passcode?
- How to reset your iPhone?
- How to make a backup of your iPhone?
- How to free up memory on your iPhone?
- How to restore your iPhone?
- How to unlock an iPhone that restarts in a loop?
- How to fix iPhone stuck on white screen?
- How to fix iPhone stuck on black screen?
- How to fix iPhone stuck on apple on startup?
- How to reset iPhone without losing data?
- How to put your iPhone in Recovery mode?
- How to force an iPhone to shut down?
- How to Recover Data from Broken iPhone?
