Greetings,

We have posted new navigator software to the Software Download Area today. Main Software Version 3.20 for the GPS 175, GNX™ 375, and GNC® 355. This update includes Transponder Board Software Version 2.80 for the GNX 375™.
The following are some of the noteworthy features added with this release:

  • Added Crossfill support for sharing flight plan information between two Garmin navigators: GPS 175, GNC 355, GNX 375, GTN (v6.72), and GTN Xi (v20.30)
    • NOTE: This feature requires settings to be entered in configuration mode: Setup > Interfaces > Cross-Side Navigator.

  • User waypoint were expanded to support user airports
  • Added support for GPS 175 and GNC 355 to receive ADS-B traffic and weather data from a GNX 375.
  • Expanded flight plan feature to allow removing a hold at the final approach fix


Please see Service Bulletin 22115 for full details of the release and installation instructions.

Brian P.