Just got a new navionics card for HB Helix 9 si gps. Is it just “plug and play” right out of the box, or does it need some kind of preparation?
If it is a new card, I would also recommend making sure that the Sonar Chart layer is turned on. To do this, hit menu twice, scroll over to chart, then down to chart select. The default normally shows it in Auto, but toggle to the right until you see either "Left FishNChip Card" or "Right FishNChip Card", depending on what card slot the card is inserted in. Now exit and go fishing. This is a one time setup and some Humminbird units will automatically turn it on and other wont, but it will allow you to get the most detail out of your card. Good Luck!!