that is really too bad! Actually, I tried to reflash the ESP8266 numerous times, with no success. Flashing worked when it first arrived using NodeMCU and FTDI Adapter. Now, flashing does not work. Yesterday, I gave up and ordered new ESP8266.
But again, funny thing is that I can actually still connect to the PixRacer Network with OSX, only QGC will not recognize the vehicle... anyways, will keep you posted.