I have a Drive Smart 61 with a SD card. In the CN South America 2019.20 as gmapprom1.img (I tested with gmapsupp.img as well) and the 3D building as gmap3d2.img.
The Garmin recognizes its 3D map but not the CN South America 2019.20 map itself.

When I turn it on it says: "Maps are corrupted and cannot be used. Go to
Link URL:
Only the registered members can see the Link URLs. Please Login OR Register.
to download the latest map."
I think this message refers to the CN South America 2019.20 map.
But Basecamp recognizes both maps.

In the internal memory I have CN North America 2010.10 and its 3D map. No issues.

What should I do so that the Garmin system recognizes the CN South America 2019.20 map?