Garmin Aera 660 Pilot's Manual page 181

Disabling automated database downloads:
1) If Automatic Database Downloads are currently enabled, from the Main
Menu, touch Tools > Downloads.
2) Touch Disable Automatic Downloads to disable automatic download of
updated databases as they become available.
User-Initiated database download/install:
1) From the Main Menu, touch Tools > Downloads.
2) Touch Easy Update to begin downloading all updated databases.
Databases will continue to download even if the Downloads page is not
displayed.
190-02017-20 Rev. E
Database Downloads Installing
Database Downloads Page
Garmin aera 660 Pilot's Guide
Appendix C
165