Hunterjt,
When you connect it up while in your house the unit detects that it does not have a transducer connected to it and automatically goes into the Point of Sale Simulator mode. While in this mode the unit does not remember any menu changes or additions/deletions to the waypoints and will reset all after about two minutes of a button not being pressed. There is a way around this though: you need to use your unit in the “forced” Simulator mode. To get there do this:
- Power the unit on with only the power cable connected as you have been doing.
- While the unit is still showing the title screen (shows something like “Humminbird 597ci HD DI”), press the MENU button.
- The unit should show three menu options. Use the Up/Down Arrow buttons to select “Simulator” and than the Right Arrow button to start it in this mode.
The unit should than start up in a simulator mode that will now remember the menu selections you make and also the waypoints that you enter into the unit. Be sure to use the power button to turn the unit off and your new waypoints should be there when you use it on your boat.