we’ve multible copters with identical configurations all based on ArduCopter 3.5.7.
Now I have to flash a new Pixhawk 2.1 to 3.5.7.
I’m running Mission Planner 1.3.68. When ever I click on “Pick previous firmware”, choose 3.5.7 and click on to the quadcopter icon, a new window will appear asking for type, version type, platform and so on.
However, the drop down version only lists 3.6.9.
Reflashing of 3.6.9 works fine, but I need 3.5.7.
Do I overlook anything?