When updating the unit on a Windows computer, you may encounter an error stating 'Update Failed: Cannot communicate with the RD-8. Please check you have the right driver installed'.
Although a driver is not necessary for use with a computer, the unit sometimes requires the installation of the Zadig driver in order to 'communicate' with the unit and update the firmware. Installing this driver will solve this issue. You can find the correct driver linked below:
Once installed, you will need to restart you compute for the effects to take place. You should then be able to run the installer successfully. The latest version of the firmware can be found on the link below: