I bought a used Garmin Nuvi 1450 GPS for my car. It came with a 2020 version of the maps for Central America. While the unit seemed to function, it wasn’t finding stuff in Guatemala. This morning I tried some addresses in Estelí Nicaragua and Alajuela Costa Rica and all worked well.
In looking for a solution (and not wanting to buy new maps) I did a bit of searching on line and found https://www.openmapchest.org/maps/central-america/ where you can get “open” versions of maps. It is a bittorrent download and there is a page of instructions on how to install the maps.
The result is fine. That is, I can now navigate in Guatemala, spend $0 and now have 2021 maps.