I managed to activate fcc on sc with mavic air 2. I done drone hack app on android phone with standard controller as is say on their website (paid hack) then when everything is running including motors but not in the air i switch off standard controller and i press and hold button on drone battery for few seconds until drone go in to pairing mode then i switch on my sc and select ma2 and go ahead with connecting msgs .all go fine and drone get unto fcc mode.tommrow i will post screen shots and i will do range distance comparison