I have an older 3DR APM 2.5 running plane firmware 2.72. I have been reluctant to upgrade the firmware as it always seemed to fly just fine. However I recently upgraded my base station to a Mac book air running APM Planner vs 2.0.10. When I connect it seems to get a few things wrong and otherwise seems to struggle to download the params if it does at all. Before I start throwing the baby out with the bath water is APM Planner backward comparable with my older plane set up?
no longer an issue