I’m trying to change the flight modes on my Pixhawk with PX4 Pro version 1.5.5. Some seconds after changing flight mode and switching menu screen, I get the following warning: “Parameter write failed: veh:1 comp:1 param:COM_FLTMODE4”, and the flight mode does not change.
I’ve also tried to change any other parameter via the Parameters menu. This returns the same type of message. I’ve checked the MAVLink Inspector, and I have heartbeat at 1 Hz, but no parameter messages are visible.
The strange thing is that the first time I powered the Pixhawk up after flashing, calibration and parameter adjustments worked just fine. After powering down and powering up again, I’m having these issues. Restarting does not help.