What Happens to the Old Card After Activating the Navionics+ Updates Card?

After using the old card to activate a Navionics®+ Updates card, it will still work and is usable in your chart plotter; however, the old card is blocked from receiving additional updates and cannot be used to activate another Navionics+ Updates card or access advanced features. In the event the old card still had remaining time on the subscription for daily updates, that time will be forfeit and not be added to the new one-year subscription.