Pixracer - leds and radio calibration problems

I have a Pixracer R14, when loading the last Arducopter firmware, one led is green and the other is flashing amber. However if I load the PX4 firmware both leds are green. Any issues with this?

In addition I get the message “Bad Channel 1 Input, Canceling” when trying to calibrate the radio in MP. I am using a Taranis Q X7S with the XSR receiver. Binding is correct, using the internal radio in mode D16, I have chacked as well the wiring is OK. Any help will be appreciated.