We recently ran into an issue where our naze32 rev 6 would not connect to cleanflight. To connect we would have to connect the BOOT pins and reload firmware. Even then, rebooting the the naze32 would still result in the board stuck in BOOT MODE.
Brand New Drone
Dji Mavic Pro Platinum
Scanning with Drones
Working on drone 3d scanning for one of our many projects.