Then I tried selecting “connect” in the top right and it says “connection timeout - No heartbeat detected”
I do not want to follow the setup wizard as it says it is going to update the firmware on my board - thought this might overwrite something Navio related.
Why do you want to connect to mission Planner?
Normally you connect to MissionPlanner via a USB cable and then use a 3DR telem module to connect to a vehicle and inject RTCM corrections to that remote vehicle.
I am not sure what you mean by “inject RTCM corrections” but I plan to control the drone by sending MAVROS commands. I can do this over WIFI but the Telemetry module allows me to do this outdoors.