New Firmware Updates 9/17/25 - HD408 Autosteer (Current)

New controller and display terminal updates for the HD408 AutoSteering system.

Learn how to update your firmware:

https://knowledgebase.agrispraydrones.com/how-to-update-the-firmware-hd408-autosteer

Display terminal update

3.7.1.15

September 17, 2025 

Download Here: Navterminal-v3.7.1.15.apk

**Will install a new version of the Autosteer app, but preserve existing settings**

Controller update

4.2.2.17

September 17, 2025 
Download Here: navctrl_4.2.2.17.ver3

Update Info:

1. Optimized the One-Touch U-Turn function.
2. Optimized the Curve guidance lines Dragging function.
3. Optimized the restriction of the Radio Modem frequency input range.
4. Optimized the Remote Assistance functionality.
5. Optimized the function for generating guidance lines by manually entering Latitude and Longitude coordinates.
6. Optimized the guidance line generation logic for both Night Mode and Day Mode display themes.
7. Optimized the Reset Base Point function when switching between guidance lines.
8. Optimized the creation of new AB Straight Lines and A+ guidance lines.
9. Optimized the real-time update of Field Area calculation when creating or modifying field boundaries.
10. Optimized the GNSS board firmware upgrade process.
11. Modified and unified the area units of all layouts
12. Optimized the Demo/Simulation mode functionality.