Does anyone have an system image of ROS kinetic compiled on RPi4 Rasbian? Or any other flavour working on RPi4?
I use Ubiquity Robotics image on Rpi which includes ROS kinetics. You can find it on https://downloads.ubiquityrobotics.com/pi.html
You will also need to install mavros: https://dev.px4.io/master/en/ros/mavros_installation.html
Yes, however, that is for Raspberry 3. Ubiquity Robotics does not have an image for RPi4