Syncing inReach Data
You can sync data from your Garmin Explore™ account to your device using the Garmin Explore app. After you make edits to your data, such as contacts, preset messages, or quick text messages, you must sync them to your device using the mobile app.
Open the Garmin Explore app.
Changes made to data such as collections, waypoints, routes, and tracks update automatically.
You can now sync your data to your GPSMAP® 66i device.