In APM Planner (latest version) my apm 2.5/6 wont initialize. When trying to connect it says "initializing", but does not move on.
I just loaded the latest plane firmware onto it.
In Mission Planner (latest version) it does not connect either, it gives me the attached error...
Anybody know how to fix this? I have not used my APM for ages and it was working fine the last time I used it :/