I used MissionPlanner (MP) to install Copter 4.1.1 on my PH4mini.
After installation, when PH4mini reboot without powering it down,
we can see the behavior of each channel in the radio calibration on MP.
However, once I power down the PH4mini,
MP shows “PreArm: Radio Failsafe on” and we can not see the behavior of each channel in the radio calibration.
Strangely enough, this error does not occur in Plane 4.1.3.
Is there anything I can do to fix this?