Garmin G3X Pilot's Manual page 351

3) With 'Update All' highlighted, press the ENT Key. The database status is
updated.
Or:
Move the FMS Joystick to highlight a single database to update, and press
the ENT Key. The database status is updated.
4) Press the RESTART Softkey. Once the database(s) have been successfully
updated, the SD Card can be removed from the unit.
5) Repeat steps 1-4 for the remaining GDUs if applicable.
190-01115-00 Rev. G
Update Databases Page
Update Databases Page
(Database Status Updated)
Update Databases Page
Garmin G3X Pilot's Guide
Appendix C
333