How to update Mazda connect navigation system for free on Mazda3, Mazda6, CX-3, CX-5, CX-9, and MX-5 Miata. You don't have to pay the dealer to update it for you. When you purchase a new Mazda navigation SD card, whether with the purchase of a new Mazda or as an accessory, you get 3 years of free updates. I am sure you need the VIN of your Mazda to set-up the account.

Link: https://www.mazdausa.com/navigation