Problem: Got param FS_Batt_Voltage//got param Sonar_Type

hello everbody

I have got a problem. I’m using APM 2.6. When clicking “connect” on the mission planner, the bar stopps either at the point “Got param FS_Batt_Voltage” or “got param Sonar_Type”. I already tried to solve it by installing an older version of Mission Planner but it doesn’t work eiter.

I really need your help solving that and would be very thankful if somebody has a solution.

kind regards,
Silvan

@BlackbirD71,
Are you using USB or telemetry radio to connect with your APM2.6?
I assume that you were able to program the APM with an appropriate Ardupilot firmware since it is trying to download parameters from the APM?
Regards,
TCIII GM

[quote=“TCIII”]@BlackbirD71,
Are you using USB or telemetry radio to connect with your APM2.6?
I assume that you were able to program the APM with an appropriate Ardupilot firmware since it is trying to download parameters from the APM?
Regards,
TCIII GM[/quote]

Im using only USB.
i was able to load the newest arducopter firmware but it fails when connecting to MAVLink.
i also tried to load an other firmware (arduplane). in that case the bar went further but stopped somewhere at 50 % at “camare trigger” or something like that.