Use japanese map offline
I want to use the Japanese GSI standard map without an internet connection. How can I do that? I've tried going to top left menu/maps/offline. It shows no maps. When I tap the + symbol to add a new offline map and select the Japan GSI map, I get two options: display or remove. Obviously I don't want to remove the map and taping display only brings me to the list of online maps. What am I doing wrong? How can I add the Japanese GSI standard map as an offline map?