Got a bug to report. On Devo10, when switched to DSM2, the safety that is checked is always left stick. This is invalid for mode 1 heli, which right stick is the throttle stick. (it checks for ch1 instead of ch3 if I'm on mode 1 DSM2 protocol)
After protocol change channals mapping don't change automatically, you need change ch1 to throttle and ch3 to elevator. After that all have to work normally.