Garmin “Additional Updates”
This is one of those answers we give frequently, so we’ll document it here for future use. People often ask about installing additional voices on their Garmin devices, or where the firmware updates for traffic receivers are found. The answer lies within the ‘Additional Updates’ section of Garmin’s WebUpdater program. Part of the confusion stems from the fact that the Additional Updates are not displayed when you first connect the GPS if major application updates are available for the device itself.
So the first time you run WebUpdater it checks to see if there are any major application updates. If those are available they will be downloaded and installed. (If no major application updates are found then it will show you the Additional updates at this time.) Next, you disconnect your device, reboot the GPS, and then connect again. Provided there are no further application updates to install, the Additional Updates section will now appear.
So what types of updates appear in Garmin WebUpdater in the Additional Updates section? Things like additional voices, voices for different languages, firmware updates for traffic receivers, and updated translation files to draw the user interface in different languages. Most of the time people will be looking for voice updates and traffic receiver updates.