For some devices, the software update is accompanied by a ROM update, install and update whatever is available with [Only registered and activated users can see links. ].
In [Only registered and activated users can see links. ], from this Thread, you have the Q2 2020 map pack for Garmin PID.
In this [Only registered and activated users can see links. ], from this Thread, you have an example of how to update the maps.