Copyright © 2017  Grand Rapids Technologies, Inc.

Electronic Flight Instrumentation for Experimental Aircraft Since 1991

  Horizon HXr


Release Date

Display Unit Software

(Includes AHRS 46 and Adaptive AHRS 64)

READ - Important change for Adaptive AHRS 57



   Past Release Notes & History



Software Update Instructions


Update Highlights:

Version 6 adds touch features including an autopilot control panel, improves autopilot performance with the Adaptive AHRS (requires AHRS 64), and supports more echoUAT configurations.

Version 5 adds support for the Safe-Fly 2020 GPS and Serial Port Combiner, as well as minor fixes and many improvements.

Version 4 adds support for the Adaptive AHRS AOA option, adds support for the HUD mode on the GRT Remote App and glasses, adds support for the Remote CAN module, adds ADS-B GPS settings for the TT22, adds Analog Input Aux sharing, fixes a problem with ADS-B METAR processing, and includes many other improvements.

Version 3 adds audio alerts.  Download and save the WAV files to the Alerts folder on your USB flash drive to add voice alerts to the latest software.  Copy the alerts into the system using the SET MENU, General Setup, Audio, Copy Alerts function.

HXr Beta Software Downloads

This section contains software in the development or testing stage for customers interested in testing new features before a final release.  The software below may be incomplete or have unexpected behavior.  Never use in instrument conditions or other situations where EFIS failure or unexpected behavior will affect safety of flight.



Release Date

No beta versions available.

HXr Software Updates

(6-Jul-2017) A new update for remote Trig Transponder Adapter software can be found here.