Problem with Pixhwak 2.1 first run

I bought a new pixhawk 2.1 a few days ago and I wanted to connect it with Mission Planner but it’s not seeing device. Pixhawk is only flashing in orange colour.
Have you any solution to solve this issue?

If you are using MissionPlanner you are using ArduPilot. This forum is for PX4. For ArduPilot, just head over to

ok, I’ll write there. Thanks :slight_smile: