If there is a firmware problem with your iPhone, don't panic. As long as you follow these simple steps, you can easily restore the iPhone firmware and bring it back to life.

Connect the computer

Connect the iPhone to the computer through a USB cable. You have successfully completed the first step once you hear the prompt of successfully connecting the computer.

Turn off the appliances

Turn off the iPhone first, and then you should hear the computer prompt that the connection is unsuccessful. Don't worry, it's normal.

Enter DFU mode

Press and hold the power button for 3 seconds, then press and hold the switch button and the home button at the same time. Until the 10 second, release the on/off key and continue to press and hold the Home key until the computer shows that the USB device in DFU state has been recognized. In this way, you successfully entered DFU mode.

Start iTunes

ITunes will automatically start and prompt you to enter recovery mode (iPhone will remain blank at this time). At this time, hold down the shift key on the keyboard, click "Restore", and then select the corresponding firmware to restore.