DFU mode uses a different communication protocol (USB restore mode) than a normally booting iPhone. If your USB driver is misconfigured, the computer sees the DFU device as an "unknown USB device" rather than an Apple device.
When you connect a functioning iPhone to a Windows PC, the system assigns it a standard Portable Device driver. However, when an iPhone enters DFU mode, the USB controller changes its endpoint identification. apple recovery -dfu- usb driver
In this state, the device's hardware identity changes to . Without the correct driver installed on your PC, iTunes or the Apple Devices app will not see the device, leaving you unable to perform a restore. 2. How to Install or Update the Driver DFU mode uses a different communication protocol (USB
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