BlueOS Arduplane 4.5.4 firmware no sensors detected (barometer not found)

Ok, so we are able to configure everything including video, telemetry over LTE (3G/4G). But PWM rail does not work further. The power is fully ok on the PWM rail, but signal does not output anything. We checked with oscilloscope, no “rectangles” are being output. Is in BLUEOS some option to enable PWM signal??