Hi, I am wanting to use topographic maps on my gpsmap 750s but a message comes up saying map not supported. Does anybody know a way around this?
I kno this device is designed for marine use but with its huge 7 inch screen it would be ideal for reading topo's when 4wding. I have a Colorado 300 hand held and it is able to load both topo's and blue charts. I don't see why this device can not do both as well.