If the firmware program does not appear to be working on your Power Commander III and you are getting an error code like "0x005, 0x008, 8001" or something similar, please see below.
These errors appear to be communication-related. Unplug the USB cable from the programmer and switch USB ports on the computer. If the error still comes up, try switching the USB port to another one and restart the computer while the programmer is plugged into the USB cable. This should refresh the USB port. Power to the programmer does not need to be attached.