I have not done the firmware for the units yet but have had only 1 outage thus far (but I think it was a power issue over the weekend).
What I have done, 3 weeks ago, is put external antenna's on the 2 units which are 15 feet apart at 15dBi.
The output is 40hz and I changed the latency time settings on the main unit, leaving the secondary at factory.
This seems to be working for me so far. Usually goes down over the weekend and have to reset Mondays,
but not this week. I am afraid of running the firmware because then it may become unstable again.
Hope this helps
or may make things worse for Cisco team.