Garmin GTN 625 Pilot's Manual page 584

Foreword
Getting
NOTE: Do not remove power to the GTN while updating databases.
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
18-12
5. Select the desired database updates and press the Update
key.
6. The GTN will begin the update process and then verify the
integrity of the installed databases.
7. Check that all databases are current and there are no errors.
If a database is highlighted in yellow, it is either expired or
missing.
Figure 18-2 Currently Installed Software/Databases
GTN 625/635/650 Pilot's Guide 190-01004-03 Rev. P