190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page H-3
H.2 Configuration Mode
Some of the software loading, and all of the configuration and calibration procedures in this section are
performed in the configuration mode. To enter configuration mode, hold down the left-hand softkey
(softkey #1) while powering on the GDU 37X. In a two-display or three-display system hold down the left-
hand softkey on PFD 1 while powering on the unit.
Figure H-1 GDU 37X Softkeys
The Configuration pages (MAIN, LRU, AHRS, ACFT, AOA, AP, W/B, UNITS, DSPL, SOUND,
COMM, GPS, XPDR, LOG, ENG) are only available in Configuration mode.
H.3 Software Loading Procedure
GDU software loading can be performed in either normal or configuration mode. Appendix H.3.1
describes the GDU software load procedures. Appendix H.3.3
describes the GDL® 39/39R data
transceiver software load procedure.
NOTE
Perform software updates on the ground only, and remain on the ground while a software
update is in progress (included in LRU software updates - see Appendix H.3.2
).
H.3.1 GDU Software Loading Procedure
See the Garmin (G3X SW Page
) website for instructions on downloading and installing current software.
1. Power on the GDU in normal mode, then insert the properly formatted SD card into the SD card
slot.
NOTE
It is also acceptable to insert the SD card before powering on the unit.
2. A software update pop-up will appear on the screen, highlight YES and press the ENT key to
begin the update.
SOFTKEY #1 SOFTKEY #2 SOFTKEY #3 SOFTKEY #4 SOFTKEY #5
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