Sounds like basemap isnt even needed if lakemaster is the source. So that isnt too bad. Using Auto Chart and Auto Chart live will help since basemap wont be there. At least I have options.
Just a little ticked spending $1500 on a unit and something as simple as updating isnt working. HB needs to figure out a way to have the unit attach directly to the PC/MAC to do the update instead of sd cards.