DFU mode is a special mode provided by developers of iOS devices and designed to update or restore the firmware of an iOS device. In this mode, the device is completely turned off, while there is no reaction of the device to pressing the control buttons, and the display does not load any, even freezing, images
Differences between DFU and Recovery Mode
DFU mode on iPhone (firmware updates) is constantly confused with Recovery Mode (recovery mode). In fact, the difference is huge, and it consists in the following:
Recovery Mode - softer mode compared to DFU; iPhone gets into Recovery Mode with the help of the iOS operating system, and into DFU Mode - bypassing it. DFU only applies when Recovery Mode refuses to help. You cannot enter DFU mode if the device is not connected to the iTunes media combine. To enter Recovery Mode, it is not at all necessary to connect the gadget to the PC.
There are also external differences between the two specific modes. The gadget in DFU MODE has a completely black screen, without the Apple logo; the gadget does not respond to pressing "Home" and "Power" separately. The display of the smartphone in Recovery Mode shows the USB cable and the iTunes icon.
How to put iPhone 6 into DFU mode
DFU or Device Firmware Update mode is a special mode for Apple mobile devices. In this operating mode, you can download new firmware to the device, even if the device does not start or is unstable. DFU mode is used to restore the functionality of the iPhone (as well as the iPad and other mobile devices with iOS) after problems with updating, installing JailBreak or other software failures that make the iPhone unusable.
The process of putting an iPhone into DFU mode is very similar to the process of entering into recovery mode.
You can enter iPhone into DFU mode using the buttons located on the device. For iPhone models up to version 6, the algorithm of operations is slightly different from entering into the recovery mode of later versions.
- Connect the device to your PC with a USB cable
- Launch iTunes on your PC. Attention: the latest version of the program must be installed on your PC.
- Press and hold the Power and Home buttons at the same time for 10 seconds.
- Release the power button while leaving the Home button pressed for 10 seconds. You should see a message on your computer screen in iTunes that the device is in recovery mode. The display of the phone itself will remain black.
- In iTunes, select the "Restore iPhone" option to reset your phone to factory settings. After that, all personal data will be erased, and the latest version of the system is installed on the iPhone.
- To exit recovery mode, press and hold the Power and Home buttons at the same time for 10 seconds, after which the device will turn off. The next time you turn it on (by pressing the power button), the device will boot normally.
