I have an ArduPilot Mega 1.4 and after updating the servo does not work with my radio there as three-position switch that walk frankly I do not know what I'm desperate
to be more precise these use my radio there anything that works except three-position switch and manual stabilization rtl
Are you saying the flight mode switch on your radio no longer affects the actual flight mode of the APM? When updating the firmware the flight mode preferences might have been dumped to the default which is stabilize. In the mission planner look at the flight mode preferences under the configuration section, if needed change them back to what you had previously. It might be something else but I'd start there.
thank you for your answer I stupidly wrong in the servo connections lol