General Updating Maps - DVD or Garmin Express?

Hi,

Had posted this under 4th generation, but it was suggested I also add to the 3rd generation board.

Have been looking at updating the map in my wife’s CR-V, but cannot work out if I can upgrade via Garmin Express, or if it requires a DVD to update.

The display unit is as shown below, but I can’t find a specific model reference for the unit.



Any help very much appreciated.

Many thanks.