I’m having a real hard time here, guys. I hope you can correct what must be my misunderstanding. Situation - conventional tractor plane with ailerons, elevator, throttle and rudder. Flying fine with Pixhawk manufactured by 3DR using ArduPlane 3.7.1. Mission Planner 1.3.49. Changed to ArduPlane 3.8.0. I power up. Flight control surfaces are all askew. All SERVOn_TRIM values set to equal SERVOn_MIN. I write 1500 to all SERVOn_TRIM. Do REFRESH PARAMETERS. All trim values = 1500. Power off/on. All trim values have reverted to the servo minimum (1050). I have set all auto trimming parameters to disable.
- I must be under a misconception concerning the SERVOn_TRIM parameter?
- How can I flash 3.7.1 firmware?
- How can I reflash 3.8.0 firmware?