I've also still been having trouble keeping all 3 of my units hashing. A lot of the time one of them will drop off and stop hashing, after reading the messages above I tried moving down to Eco mode and they've been running stably since. I have the official futurebit PSU's that I'm using with them, so not sure if it's a power problem or something else. I'm likely gonna keep them on eco mode since the efficiency makes more sense for me with my high electric rate, but wanted to confirm so far turning down the hashrate has helped the stability issues I had with running 3 units (1 full 2 standard). Not sure if it's an internet connectivity issue since it seemed to happen while the rest of my internet is working just fine. I'm excited for future updates and sure the new firmware will be very helpful

This most likely is miner binary crashing. It crashes every few days, on every machine. You can resolve this by looping it in bash script, I posted it in this thread a few pages ago. Unless this is already fixed for Full units? I don't know.