Notice of Upgrading RadioLink PIXHAWK' Firmware V4.0

Since Dec.29, 2019, ArduPilot official has updated the firmware of arducopter(multirotor), arduplane(acrobatic), and ardurover(car/boat) to V4.0. However, the sensor integrated with firmware V4.0 has been modified, making some RadioLink PIXHAWK doesn’t function normally as the progress bar doesn’t move when calibrating the compass. If this problem is encountered, please follow steps below:

Note: The progress bar should be moving when calibrating compass, meaning PIXHAWK functions and is compatible with firmware V4.0. Then there’s no need to follow steps below

1. Connect the PIXHAWK to a GPS module with compass

Because it is the internal sensor driver modified with the V4.0 firmware, and the external sensor remains. To work with an external one, it can function normally.

2. Use the firmware of V3.X instead of V4.0

Arducopter 3.6.12

https://firmware.ardupilot.org/Copter/stable-3.6.12/fmuv2/arducopter.apj

Arduplane 3.9.11

https://firmware.ardupilot.org/Plane/stable-3.9.11/fmuv2/arduplane.apj

Ardurover 3.5.2

https://firmware.ardupilot.org/Rover/stable-3.5.2/fmuv2/ardurover.apj

Click the links above to download the corresponding firmware, then load them in the Mission Planner