With the programming cable plugged into the computer, ARC500 will show a file is transferring to the scanner even if no scanner is connected. You need to look at the scanner display to see if a file is actually transferring. If you are showing a COM port, the cable should work. Just for the devil of it, close ARC500, connect your scanner to your computer, and run the CPU firmware updater for boot version F10 again. Make sure that you are running the extracted file.