I am going around in circles trying to load the Nebraska topo onto my computer and Etrex20x. I have Windows 10 with Basecamp. I downloaded the Nebraska topo as an exe file, and when executed it created the directory netopo11. When I looked in the directory of netopo11 on my computer, there are a series of disk images. I believe when I have loaded maps in the past, I got a single .img file. Basecamp does not seem to know what to do with disk images, so I have not succeeded in getting the Nebraska topo onto Basecamp.
Please tell me what I am missing. Thanks.
Richard