I "think" you have to tell the unit which "map" you want to look at. Should be in your menu somewhere, then you choose the unit's base map or the chip's map.

If Rickie (rnvinc) sees this, he'll know for sure ... he's the "go to" guy for HB units.

If you need to know "right now" ... I'd download the pdf for the user manual, and look at the menu setup concerning maps. That should show you the diagram of where each category goes & what settings they cover. You may even want to print it out (if able to) and highlight certain parts of it, for a quick refresher until you have those settings & pathways memorized.