Individuals can update a Canadian map on a Garmin Nuvi GPS device through the Garmin Express application or by copying the map file to the device's hard drive directly. The Garmin Express software is available for both Windows and Mac operating systems.
In order to update a map on a Garmin Nuvi GPS device using Garmin Express, individuals need to download and install the application on their computer. Then, they run the application, connect the Garmin Nuvi device to their computer and follow the prompts on the screen.
Alternatively, they can download an open source map from the OpenStreetMap website and convert the file to a file format that Garmin device can use. Then, they connect the GPS device to their computer in mass storage mode and copy the converted map file to the Map folder.