What is the DFU mode?
The full name of DFU is Device Firmware Upgrade, which is the forced Upgrade/downgrade mode of the iPhone Firmware. You may have heard about the DFU mode of the iPhone. The full name of DFU is Device Firmware Upgrade, which actually means the forced Upgrade/downgrade mode of the iPhone Firmware. It is usually used only when the iPhone cannot be started, iTunes cannot be identified, or when the jailbreak guide is downgraded.
How to enter the DFU mode?
DFU mode:
1. Shut down ipad5 (long press the power supply and press the slide on the screen to shut down ).
2. Now, press the IPAD's host key and Home key (connect the ipad to your computer) at the same time ).
3. When you see the white Apple Logo, open the key loose and hold down the Home key.
4. Enable iTunes, and wait for it to prompt you to restore mode. Then, press and hold the Shift key on the keyboard, click "restore", and select the appropriate firmware for recovery.
Failed to enter DFU mode
1. Press and hold the top power key for 3 seconds;
2. Do not hold down the power key for 10 seconds at the same time;
3. Release the power key and hold down the home key for 30 seconds until iTunes automatically detects the iPhone in recovery mode and then releases it.
How to exit DFU mode
At the same time, press the HOME key and POWER key to exit in about 10 seconds, which is very simple.