I have flown this quad a few times without issue but as a beginner wanted angle mode so today I turned on the accelerometer and saved. This may or may not have anything to do with the problem I now have. For some reason the board has defaulted to spectrum and I am using Frsky SBUS. I have changed this and saved but when I go into servos there is a brief flash of recognition, all the bars have colour and then they go blank, sometimes I get one bar on Aux 1 but that is not resposive to the Tx. The quad connects to Betaflight OK and everthing otherwise seems ok,the motors run up on test. The receiver is bound, in fact I have tried another and changed the connection lead. Each time the quad is disconnected and re-connected we are back to Spektrum so my changes are not saving. I am reluctant to re flash the board as I understand that this can void any warranty.