Hi. I have exactly the same problem with TE/PS and Auto Zero on GCM not sticking after updating via iphone 6s and 520. Are you also finding it can take ages to first wake up? See Pedals not waking up after firmware 3 update
Auto zero shows up as “off” using GCM on my iPhone and causes the pedals to disconnect when I try to enable it. When I check the status on my Edge 520 it shows up as enabled. I’m just going to ditch GCM since it’s not really needed and everything seems to be working fine otherwise.
Another strange thing is that there seems to be a missing toggle option below Torque effectiveness... and above pedal power phase in the “Vector Features” menu on the Edge 520. I can’t remember what the toggle was but I’m certain that something was there.
Same issue here....torque effectiveness/pedal smoothness is disabled. I will enable it through GCM but when I look again it's been disabled. And no such data shows up on my Edge 520 so it seems to really be disabled, and not just a display issue