To update the firmware download and extract the firmware zip. Plug Cluster Commander to USB and execute "RunMe.bat" A window will pop up listing all your detected COM ports and ask which one the cluster commander is connected to. If you're not sure, close the window and look at Windows Device Manager and unplug / replug the cluster commander to determine it's COM port. If you do know which COM port to use, just type in the number of the port and hit enter. Flashing will commence immediately. Strongly advised to (L)oad default values and (W)rite to the EEPROM after flashing.