Updates & Downloads

G5-STC Electronic Flight Instrument (Other Operating Systems) software version 8.25

as of October 10, 2023

Download (1.02 MB)

View installation instructions

Change History

Changes made from version 8.20 to 8.25:

Added additional expert-level autopilot gain configuration
General improvements to system operation
Includes update to G5 boot block verison 2.40
Includes update to GSA 28 software version 5.45
Includes update to GMU 11 boot block version 2.10
Includes update to GMU 11 software version 2.20
Includes GAD 13 software version 2.10
Includes GAD 29B software version 3.40
Includes GAD 29D software version 2.10
Includes GMC 507 software version 3.10
Includes IGRF database base year 2020

Changes made from version 8.02 to 8.20:

Add optional audio alert for high-airspeed condition
Add optional Auto Track/Heading selection for HSI display
Add ability to disable ESP by holding AP DISC button for 5 seconds
Add display of altitude minimums bug when integrated with G3X
Improve ESP operation
Improve data logging
Improve diagnostic pages
Improve LRU software update process
Improve MapMX RS-232 interface
Improve winds display
Improve battery gauge display
Improve HSI display
General improvements to system operation
Includes update to G5 boot block verison 2.40
Includes update to GSA 28 software version 5.40
Includes update to GMU 11 boot block version 2.10
Includes update to GMU 11 software version 2.20
Includes GAD 13 software version 2.10
Includes GAD 29B software version 3.40
Includes GAD 29D software version 2.10
Includes GMC 507 software version 3.10
Includes IGRF database base year 2020

Changes made from version 8.00 to 8.02:

Improved GSA 28 hardware monitoring
Includes update to GSA 28 software version 4.95/2.25
Includes GMC 507 software version 3.10
Includes GMU 11 software version 2.10
Includes GAD 13 software version 2.10
Includes GAD 29B software version 3.40
Includes GAD 29D software version 2.10
Includes IGRF database base year 2020

Changes made from version 7.30 to 8.00:

Added support for Smart Glide
Added ability to simultaneously arm flight director VNAV along with GP or GS mode
Added additional data to SD card flight data logging
Added notification of missing/undetected battery
Added menu option to diagnostic page to access AFCS diagnostic log
Added support for LP+V CDI scale
Improved AFCS operation with blocked pitot tube
Adjusted appearance of dual cue flight director
General improvements to system operation
Includes GMC 507 software version 3.10
Includes GSA 28 software version 4.90/2.20
Includes GMU 11 software version 2.10
Includes GAD 13 software version 2.10
Includes GAD 29B software version 3.40
Includes GAD 29D software version 2.10
Includes IGRF database base year 2020

Changes made from version 7.21 to 7.30:

General improvements to system operation
Includes update to GMC 507 software version 3.10
Includes GSA 28 software version 4.90/2.20
Includes GMU 11 software version 2.10
Includes GAD 13 software version 2.10
Includes GAD 29B software version 3.40
Includes GAD 29D software version 2.10
Includes IGRF database base year 2020

Changes made from version 6.82 to 7.21:

Added support for GAD 29D GPS/Navigation data interface adapter
Added additional data to SD card flight data logging
Improved battery charging control
General improvements to system operation
Includes update to GAD 29B software version 3.40
Includes update to GSA 28 software version 4.90/2.20
Includes update to GMC 507 software version 3.00
Includes update to GMU 11 software version 2.10
Includes update to GAD 13 software version 2.10
Includes update to IGRF database base year 2020
Includes GAD 29D software version 2.10

Changes made from version 6.73 to 6.82:

Added support for new battery model
General improvements to system operation
Includes update to GAD 29 software version 3.30
Includes GSA 28 software version 4.80
Includes GMC 507 software version 2.90
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 6.72 to 6.73:

Added additional autopilot configuration options
Includes update to GSA 28 software version 4.80
Includes GMC 507 software version 2.90
Includes GAD 29 software version 3.20
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 6.70 to 6.72:

Improved VLOC navigation aiding
Includes GSA 28 software version 4.70
Includes GMC 507 software version 2.90
Includes GAD 29 software version 3.20
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 6.60 to 6.70:

Added additional autopilot configuration options
General improvements to system operation
Includes update to GSA 28 software version 4.70
Includes GMC 507 software version 2.90
Includes GAD 29 software version 3.20
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 6.40 to 6.60:

Added additional autopilot configuration options
Improved GMC 507 calibration procedure
Improved navigation source selection from G5 #2
Improved density altitude display
Improved NMEA GPRMC sentence output
General improvements to system operation
Includes update to GSA 28 software version 4.60
Includes GMC 507 software version 2.90
Includes GAD 29 software version 3.20
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 6.20 to 6.40:

Added support for G3X system configurations with no ADAHRS LRUs
Added support for sending GAD 13 OAT data over ARINC 429
Added attitude / air data miscompare monitoring and annunciation
Added support for Piper Altimatic IIIC autopilot
Changed VNAV mode interaction with selected altitude
Improved flight director display and post-installation tests
Improved SD card flight data logging
Improved processing of RS-232 VLOC navigation data in G3X system
General improvements to system operation
Includes update to GMC 507 software version 2.90
Includes update to GSA 28 software version 4.50
Includes update to GAD 29 software version 3.20
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 6.00 to 6.20:

Added outside air temperature and true airspeed display to PFD page
Added wind display to HSI page
Added display of selected course to HSI page, replacing groundspeed field
Added status message to indicate when an LRU software update is in progress
Added attitude diagnostic page
Added GFC600 ARINC 429 input and output formats
Added 'Airdata' ARINC 429 input format
Added additional expert-level autopilot gain configuration
Improved G500/TXI interface
Improved GPS data processing
Improved formatting of position fields in NMEA RS-232 output
Improved flight director VOR/LOC capture during post-installation ground test
Improved powerdown process
General improvements to system operation
Includes update to GSA 28 software version 4.40
Includes GAD 29 software version 3.10
Includes GMC 507 software version 2.80
Includes GMU 11 software version 2.00
Includes GAD 13 software version 2.00

Changes made from version 5.70 to 6.00:

Improved VOR TO/FROM flag operation for NAV radios connected via RS-232
General improvements to system operation
Includes update to GAD 29 software version 3.10
Includes update to GMC 507 software version 2.80
Includes update to GSA 28 software version 4.30
Includes GMU 11 software version 2.00

Changes made from version 5.60 to 5.70:

Improved GMC 507 pre-flight test processing
General improvements to system operation
Includes update to GMC 507 software version 2.60
Includes GAD 29 software version 3.00
Includes GMU 11 software version 2.00
Includes GSA 28 software version 4.10

Changes made from version 5.50 to 5.60:

Improved contrast of vertical deviation indicator
Improved flight director command display across multiple displays that use different attitude sources
Improved NMEA date/time output prior to initial GPS fix
Improved GMC 507 attitude monitoring
General improvements to system operation
Includes update to GMC 507 software version 2.50
Includes GAD 29 software version 3.00
Includes GMU 11 software version 2.00
Includes GSA 28 software version 4.10

Changes made from version 5.20 to 5.50:

Added support for G500/TXI integration
Added support for GTN VNAV guidance
Added config mode indication that aircraft is in motion during magnetometer calibration
Improved CAN bus error reporting
Improved VHF NAV radio RS-232 OBS course data output
General improvements to system operation
Includes update to GMC 507 software version 2.40
Includes GAD 29 software version 3.00
Includes GMU 11 software version 2.00
Includes GSA 28 software version 4.10

Changes made from version 5.00 to 5.20:

Added support for GSA 28 yaw damper in certified aircraft installations
Improved GAD 29B analog heading/course datum outputs
Improved battery status display
Changed glideslope deviation to be hidden when not flying inbound on localizer course
General improvements to system operation
Includes update to GMC 507 software version 2.20
Includes update to GSA 28 software version 4.10
Includes GAD 29 software version 3.00
Includes GMU 11 software version 2.00

Changes made from version 4.10 to 5.00:

Added support for GMC 507 AFCS mode control panel
Added support for GSA 28 trim servos
Added support for flight director VOR, LOC, and GS modes
Added display of AFCS pre-flight test status
Added support for additional configuration for certified aircraft installations
Added ability to display AFCS data on all displays when multiple displays are present
Improved status message display
Improved ESP operation
General improvements to system operation
Includes update to GMC 507 software version 2.10
Includes update to GSA 28 software version 4.00
Includes GAD 29 software version 3.00
Includes GMU 11 software version 2.00

Changes made from version 3.20 to 4.10:

Added support for GAD 29B and analog autopilot interface with GPSS
Added option to configure roll indicator for sky pointer or ground pointer
Added ability to adjust pitch/roll calibration without leveling aircraft
Added ability to configure unit yaw installation offset for use in angled panels
Added display of battery status on backlight adjustment page
Added 'EFIS/Airdata 2' ARINC 429 output format
Changed battery status display when battery is unable to charge
Changed selected track bug symbol
Improved heading tape bug indicator display
Improved altitude display when adjusting baro setting
Improved HSI page data field display
Improved configuration of hectopascal pressure units
General improvements to system operation
Includes GAD 29 software version 3.00
Includes GMU 11 software version 2.00
Includes GSA 28 software version 3.20

Changes made from version 3.10 to 3.20:

Improved display of battery status
Improved attitude calculation
General improvements to system operation
Includes GAD29 software version 2.30
Includes GMU11 software version 2.00
Includes GSA28 software version 3.20

Changes made from version 2.70 to 3.10:

Added support for GMU11 magnetometer
Added ability to reset to factory defaults
Added auto-slew support to sync VLOC course when switching from GPS to VLOC
Improved VHF radio VOR bearing display
Improved display of HDG and GPS fields on PFD
Improved display of LOI/DR and MSG/WPT indicators on HSI
Save PFD heading bug, track bug, and VLOC course through power cycles
General improvements to system operation
Includes GAD29 software version 2.30
Includes GMU11 software version 2.00
Includes GSA28 software version 3.20

Changes made from version 2.60 to 2.70:

Improved GPS aiding from GTN and GNS navigators
General improvements to system operation

Changes made from version 2.40 to 2.60:

Added configuration option to disable VLOC course selection on standalone unit
Changed VLOC course to use decoded OBS setting from MapMX input, if available
Changed flight director TO mode to disengage autopilot when activated
Changed flight director GA mode to disengage autopilot if minimum airspeed limit is not configured
Improved attitude calculation
General improvements to system operation
Includes GSA 28 software version 3.20

Changes made from version 2.20 to 2.40:

Added display of CDI scale and GPS navigation source annunciations to HSI
Added support for Text Out RS-232 format
Added configuration setting to allow display of navigation data with a GDU display is present
Added configuration setting to hide HSI page
Added configuration setting to hide navigation data
Added configuration setting to inhibit user pitch offset
Added synchronization of TRK bug between multiple units
Improved flight director GPS mode when IFR GPS is navigating a heading leg
Improved attitude sensor processing
Improved GPS receiver performance
Improved GSA 28 software update process
Improved visibility of VNAV deviation indicator
Improved horizontal and vertical deviation data
General improvements to system operation
Includes GSA 28 software version 3.20

Installation Instructions

Download the compressed update file onto your hard drive and extract it (.zip format).
Insert a FAT32-formatted micro SD card with at least 20 MB of free space into your card reader.
Copy the ''Garmin'' folder to the top level (root directory) of the SD card.
Safely eject the SD card.
Apply power to your G5 Electronic Flight Instrument.
Insert the SD card containing the software update. You will be prompted to confirm before the update is installed.
During the software update, the G5 will indicate ''Loading''. Do not remove power during the update process.
When the update is completed, the G5 will reset itself and turn on normally.
Repeat steps 6-8 for each G5 unit in the aircraft.