Retired Board APMpro problem

I am using Mini APMs and a recently purchased APMpro. A couple of days ago I got the message ‘retired board…will upload latest firmware AC 3.2.1/AP 3.4.0’. Now I get the same message for all units. After I perform calibration, with elevons checked, the Advanced Parameters page does not appear.

All of this worked fine prior to last week. What’s happened?

The last firmware that will load on any APM is 3.2.1.That message has been appearing since firmware went to 3.3.x.If you ignore it it will still only flash 3.2.1 to an APM.So it’s not a new thing.Have you recently updated Mission Planner.That’s the only reason for the message only recently appearing.