I actually just went out and did some testing as well. I was unable to get the RTH height reset to work properly without the IOC checked. I could not get the lights to do the rapid green flash. This worked perfect with IOC enabled.
So the rapid flick non IOC was not working for me. I tried about every possible combination (top to bottom, center to bottom, center to top, etc) and could not get it to enable. This was in NAZA/non IOC. I cant switch to Phantom mode and test as we lose RTH in S1 and I don't trust it enough to fly out of range in my currently location with all my trees to test.
So the rapid flick non IOC was not working for me. I tried about every possible combination (top to bottom, center to bottom, center to top, etc) and could not get it to enable. This was in NAZA/non IOC. I cant switch to Phantom mode and test as we lose RTH in S1 and I don't trust it enough to fly out of range in my currently location with all my trees to test.