What is dfu mode

dfu mode is a kind of Apple recovery mode. It actually means the forced upgrade and downgrade mode of iPhone firmware. In recovery mode, itunes and data cable icons will be displayed on the screen.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

1. Apple is divided into two recovery modes, one is called DFU mode and the other is recovery mode. The full name of DFU is Development Firmware Upgrade, which actually means the forced upgrade and downgrade mode of iPhone firmware. The recovery mode is where the itunes and data cable icons are displayed on the screen. 2. The biggest difference between the two is that DFU mode does not start the MACOS system. iTunes cannot decide whether the iPhone recovery process is interrupted because the system has not started. , related services cannot be enabled. It is said that the iPhone restored in DFU mode is more thorough.

3. Under normal circumstances, for example, if our device has a software failure and cannot start normally, such as forgetting the power-on password of our device, or the legendary white apple, etc., this method can be used to solve it. That's why I call him Invincible Refresh Mode.

Tutorial:

1. Enter the detailed steps of DFU. (After successful entry, the screen will be completely black) Note: Be sure to connect the data cable to the computer when entering DFU operation.

2. Press and hold the power switch for 3 seconds.

3. Press power home while the screen turns black, and recite silently for about 10 seconds.

4. Release the power key and hold the home keyboard for more than 10 seconds, or longer. If the screen is black, release all the keys and the screen will turn black and enter the dfu mode. At this time, open itunes and you will be prompted to restore the phone. If the timing is not good, it is recommended that novices use the Hongxue tool to enter the dfu mode and follow the prompts. Click to download Hongxue to open the Hongxue tool, select "Other", as shown in the picture to enter DFU. During the operation according to the Chinese prompts, the iPhone screen will display the code and wait patiently for the progress bar to finish. When the prompt is completed, you have successfully entered DFU. model.

5. Recovery method

6. First, disconnect the data cable and shut down the iPhone. 7. After shutting down, hold down the HOME button and keep it still. Connect the data cable to the computer and release it. HOME key, the screen prompts the icon as shown in the figure, and the recovery mode is successfully entered. After connecting to itunes, you will also be prompted to enter recovery mode.

8. Exit recovery mode. The method is very simple, just press and hold the HOME button and the POWER button at the same time until the white Apple LOGO appears on the screen.

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