I upgraded my previous mesh network from just 4 - M5 units, to 2 - XE75 and 4 - M5 Decos with one of the XE75 being the Main, and the others as satellites. When I first hooked it all up, everything worked great for a couple of weeks. Then, I updated the firmware and right after the update, the M5 Decos continuously drop off the network. Sometimes, they'll come back within a few minutes, other times I have to disconnect and reconnect, but even after that, they keep dropping off. I was hoping another update would come out to fix this, but one hasn't yet. My wife works solely from home, and is very dependent on internet that works. Is this a known issue? Are there any fixes? Please help.