They use the same software, so you can use the version you have, try the nxg nx-820 software from this site, whichever you use they won't allow for updates. The only way to get updateable mx editor is from URC Control Room, which is only for dealers. The urc library is nothing special, I would teach each command anyways, what isn't available, found the pronto hex and import it via the universal browser in the mx-editor.