Updating Your Charts Using the Garmin Express App
As of software version 34.00, this device supports up to a 1 TB microSD® memory card, formatted to exFAT with speed class 10 or higher.
Downloading the chart update may take up to a few hours.
You should use a blank memory card for chart updates. The update process erases the content on the card and reformats the card.
Parent Topic: Garmin Express App