Garmin G1000 Cockpit Reference Manual page 146

Appendix
12) Turn system power OFF.
13) Remove the SD card from the top card slot of the MFD.
14) Turn system power ON.
15) Press the ENT Key to acknowledge the startup screen.
16) Turn the large FMS Knob to select the AUX Page group on the MFD.
17) Turn the small FMS Knob to select the System Status Page.
18) Press the Display Database Selection Softkey to show standby navigation
database information for each display (MFD1 DB, PFD1 DB). Verify the
correct standby navigation database cycle information is shown for each
display.
Magnetic Field Variation Database Update
At startup, the system compares this version of the MV DB with that presently being
used by the AHRS (GRS). If the system determines the MV DB needs to be updated,
a prompt is displayed on the Navigation Map Page, as shown in the following figure.
GRS Magnetic Field Variation Database Update Prompt
Loading the magnetic field variation database update:
With 'OK' highlighted, as shown in the previous figure, press the ENT Key
on the MFD. A progress monitor is displayed as shown in the following
figure.
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Garmin G1000 Cockpit Reference Guide for the Diamond DA42NG
Uploading Database to GRS
190-00963-02 Rev. C