AW: In order to keep the map content of your Navigation micro-SD card up to date, it is possible to update map database with a PC tool called “Toolbox” via the Naviextras online update portal. On Naviextras you have access to free and pay type updates as well as other add-on’s. There are two navigation packages for the Z-E3766 which come with either 3-years map update subscription (Z-EMAP66-MH3/EHG3) or 7 years subscription (Z-EMAP66-MH7/EHG7), allowing you to update the map content for the period of three / seven years after first (GPS) activation at no cost. Within a 12 month time frame, TomTom (map provider) usually releases two content updates which get offered for download on Naviextras (3rd party offering, no guarantees can be made for the update cadence).
Navigation software updates, Add-On content und map updates are available here: https://zenec.naviextras.com
Disclaimer: The card update subscription duration can only be guaranteed in its entirety in conjunction with a new device which is put into service together with a new navigation card. For used devices with navigation packages purchased later, limitations apply because the date of the first use of device is crucial. Naviextras places a time stamp point on the device once first sat connection is established.