I get the error: “Set param error. Please snsure your version is AC3.3+” even tho im using the latest firmware: ArduPlane: V4.3.5 & the latest mission Planner.
Is 4.3.5 > 3.3 ?
It’s not an error, it is a request.
You have complied with the request by using the latest stable version.
So pat yourself in the back and ignore it
What param are you trying to change?
This message is usually produced during ESC calibration.