I believe many users have heard the DFU mode of this noun, especially in the brush machine tutorials and other articles often seen. So what is DFU mode? How does the iphone enter DFU mode, how to exit DFU mode?
What is DFU mode
DFU's English full name is device firmware Upgrade, a simple explanation for the forced upgrade/downgrade of iOS device firmware.
How to enter DFU mode
1, the first to turn off the iphone.
2. Press and hold power (shutdown) key and home button after shutdown.
3. When the white Apple logo appears on the iphone screen, loosen the power key and continue holding down the home key.
4, open itunes, waiting for its prompt you to restore mode, you can hold down the keyboard shift button, click "Restore", select the appropriate firmware to restore.
How to exit DFU mode
In the case of a cable connection, hold down the power key and the home key for 10 seconds, and then release the "Home" key and the "power" button if you hear the computer appear "Ding Dong" or see the white Apple logo on the iphone. Then do not press any buttons, the iphone will automatically boot. The iphone screen will show the Apple logo for a long time will not move, just wait a while, the iphone will quit DFU mode normal boot.
