Click Update Available if there is an available update for your device4. basically nuvi 770 has only enough space to handle either north america or european maps, therefore you need to buy the card insert it into thw nuvi run the updater app and instead of installing it to your unit install it to the sd card in the unit. it from the link above, Install it and connect your nuvi to your pc.
Click Checkout and complete the going to need to buy an sd card about 4gb should do.
Please click here : LINK on instructions about how to send it for repair.
Feel free to ask any question or concern you may have. Positive Feedback and BONUS are always appreciated.
Updating your Garmin maps has become easier over the past few years, as the company has streamlined its maps update processes and access points.