Lol yeah I saw that too. Very cool!

I'm not having any problems with Octoprint. As far as I know the board in the QQ-S Pro is pretty good. They might not have set things up properly. I'm a total newbie to 3D printing and raspberry pi, and I've never had any hiccups.

Actually that's not entirely true. I finally realized that the auto-leveling feature of the QQS would refuse to complete if the Pi was plugged in. It would start up, but the second it first touched the build plate it would stop and not budge. But all I had to do was unplug the Pi's USB, run the leveling again, and when it was finished I could plug back in. Everything else works for me, and I've run at least 4 dozen jobs on it since setting it up.

I don't know what upgraded means either. Where are you looking at these? Are you buying second hand?