Flashing er9x on a Turnigy 9x transmitter

The Turnigy 9x transmitter (here the Mode2 version on the Hobbyking’s website) is for sure one of the most chosen radio by who start playing with multicopters (and not only with them…). One of the most reported flaws is its software, that doesn’t offer “advanced” features as some more expensive transmitters and that sometimes it’s also difficult to use. For this reason some…