For instructions on how to update the firmware, please refer to this article here
You must first uninstall the existing software version on your computer before installing the latest version. You must also make sure the DM-810 is NOT connected to your computer.
Right click on the DM software icon in the start menu and select “uninstall”
Or, you can go to your control panel, select “Programs”, then “Programs and features” and select “Uninstall”. From there, you would select “Uninstall”.
After the software has been successfully uninstalled, you will want to download and install the latest version.
From here, it’s just like installing the software for the first time.
For instructions on how to install the DM-810 software, please view the article here