Plane parameter missing?


Hi all, as seen in the figure attach, why the cruise airspeed and navigation angle parameter suddenly missing (0 value)? I tried to change it but it cannot be set. By the way, im using Arduplane 4.0.9 firmware version. Thanks in advance,

Use a Mission Planner that is as old as your AP version. The parameters were renamed a while ago…

Thanks for the reply, ok I understand… and one more question, since i bought ready to fly drone, the 4.0.9 firmware was pre-installed… so if i wanna upgrade to the latest firmware what about the parameter setting? do i have to tune again by myself or i can just take from 4.0.9?

I would recommend a retune. There were lots of changes in the past four years

ok thank you, i will do that…