Know More Info. About DFU:
DFU mode stands for Device Firmware Update, which is a mode that allows the device to be restored from any state. When you are faced with problems that your iPhone can't restore under various situations, you may need to put your iPhone in the DFU mode to fix the problem. If your iPhone is stuck in the recovery mode, you may need to enter the DFU mode firstly to solve the problem smoothly. If the iTunes can't recognize your iPhone when connecting your iPhone to the computer, you may possibly be advised to enter DFU mode so as to ensure the smooth running of a certain process. When you need to downgrade your iPhone from iOS 9 to iOS 8, or from iOS 8 to iOS 7, you will be required to enter the DFU mode first of all. After successfully entering the DFU mode on iPhone, you will then need to exit the DFU mode to end the process. So, do you know how to enter the DFU mode on your iPhone? You can find the answers in the below part!
Step 1. Connect your iPhone to the computer via the USB cord. And then open the installed iTunes on your computer.
Step 2. Press the Power button for a few seconds until you see the below interface. Then slide to power off your iPhone. Make sure that the USB cord still connects your iPhone to the computer.
Step 3. Now, press the Home and Power button at the same time for at least ten seconds.
Step 4. Then release the Power button and continue pressing the Home button until a message appears in iTunes saying that an iPhone in recovery mode has been detected.
You have to know when your iPhone is in the mode of DFU, your iPhone screen will be completely black. If you see Restore logo, iTunes logo or any other messages on your screen, it means that your iPhone is in Recovery Mode. Then you just need to repeat the steps until you successfully enter into DFU mode.
To exit the DFU mode on iPhone, you will need to rely on iTunes.
Step 1. Open the installed iTunes on the computer and then connect your iPhone to the computer via the USB cord. Then wait for the iTunes to recognize your iPhone.
Step 2. When your iPhone is in the DFU mode, its screen will remain black. Then hold the Home and Sleep buttons at the same time for several seconds. Release the two buttons and immediately press the Power button to exit DFU mode.
Words in The End:
Now, you have learnt how to enter or exit DFU mode on your iPhone without any difficulty. If unfortunately you lose some important files from your iPhone such as contacts and messages, you can rely on this Coolmuster iOS Data Rescuer to recover the lost files from your iPhone with or without iTunes in one click! And below is the free trial version of this software! Make sure to download the right version! Or otherwise it will fail to work!