APM P works but not %100. Flight mode changes are not indicated. Cannot seem to see / adjust some of the battery failsafe settings. Do I absolutely have to update the firmware to a newer version for APM P to work? 
ps not saying anything is wrong with new APM Plane firmware versions… but 2.72 works just fine as is. A lot of set up involved. Kinda hate to fix it if it’s not broke kind thing.
Installed the latest firmware so it’s a non issue. I would have deleted the post entirely but didn’t see that option