Hi Guys: I upgraded my P2 to 3.12 and the old style transmitter to 184.108.40.206 I cannot bind the transmitter to the MC In fact, I cant bind any transmitters I have to the MC I calibrated the transmitter. It responds in RC assistant fine. In Phantom assistant, it does nothing. I have a solid green light on the transmitter. I have a solid red light on the MC link button. Transmitter = On. I push the link button, it starts to flash. I release it and it reverts to solid red. Lastly- I get a CFG-ERR message within the phantom assistant SW = Configuration error, this may cause by firmware upgrade from old version.or abnormal Tx calibration. Re-calibrate your transmitter,and power cycle your controller and check all of the parameters. Any and all help is appreciated.