phoenix sim with devo 8s

Iam new to this firmware and activate the basic control of the sim but i cannot activate throttle hold and stunt mode in my devo 8s. Can someone help me?

Not all the switches will operate correctly. I have the same issues. I did however, get the TH to eventually work. One must just keep experimenting until you get as close as you can. I believe it is a function of both the sim software learning your TX. I am not an authority but since no one else replied, I at least wanted to share my experiences with you.