If your Humminbird GPS Combo is not displaying the LakeMaster map card try the following: 

  • In your Humminbird unit, check the "Chart Select" tab options to verify that the map card is being read (See image 1 below).  Choose Auto, or Left/Right card slot depending on your unit.
  • Check to ensure you have a compatible Humminbird GPS combo product.  
  • Check to ensure that your Humminbird GPS has the most recent update available in our FAQ Section.
  • You must register your GPS to see what updates are available for your Model.
  • Occasionally setting your Humminbird to North Up under the Nav tab>Chart Orientation Menu option may increase the speed of your unit. LakeMaster map cards will also display in "Course Up" mode. (See image 2 below)
  • After checking and adjusting the above settings, you should be able to zoom into a LakeMaster lake and see contours. If you are still having problems displaying contours, please contact us.

    Image 1

    Image 2
  •  CO_NorthUp