We have a ZD1106 running on 9.8.1.0 build 101. and all the MacBooks in the office running 10.10.3 are having the same problem where they get dropped from Wifi and cannot reconnect.
We are running 802.1X EAP and I am not sure if it is an authentication issue or not, because the wifi icon on the top shows connected, but apps like Skype and Dropbox show no connectivity.
I am not sure if we need to upgrade to a latest version of firmware, and I also do not know how to do this. We have a support in place