RS700 firmware update 1.0.9.6

I have the same issue with my Honeywell 9000 Series (RTH9580 Wi-Fi) thermostat and La Crosse C83100 weather station. Both are older 2GHz band only devices that worked perfectly before the v1.0.9.6 update. I was able to get them running by linking them to my extender instead of directly to the RS700 router, but that seems to have caused those extenders to lose internet connection. When I change the 2GH band channel assignment (1,7 or 11) on the RS700, the internet connection is reestablished at the extender but usually disconnects after a few hours.