You must have the latest iTunes or iCloud Apple drivers installed for your PC to recognize devices in DFU mode.
Note: If the file asks for a password, it is often gautamgreat or provided on the download page. Download Pwnder For Windows Coded Gautam Great
Ensure you have the latest .NET Framework installed. You must have the latest iTunes or iCloud
If the device isn't recognized, use Zadig to reinstall the WinUSB or libusb-win32 driver for the "Apple Mobile Device (DFU Mode)" entry. Download Pwnder For Windows Coded Gautam Great