If the Power Commander III USB will not complete a firmware update using the control center software, check the following.
- Make sure you are using the latest control center software.
- Make sure you are using the correct version of firmware for your device.
- Make sure you are using the 9-volt adapter, and the battery is producing more than 8.5 volts.
- Check the current version of firmware, it needs to be 18.104.22.168 or newer to update using the control center software.
If the firmware update still fails, the firmware programmer module will be needed to update the firmware.