Hey Guys,
I have exactly the same problem, but with a Cubox i4 Pro. The freeze occurs like once a day, I already gathered the logs you requested in the previous post:
The IP address is still pingable, my SSH session where the log was gathered was still somehow working, at least the return and some messages appeared. I tried CTRL + C to access the shell, but nothing happens anymore. Also a new SSH session runs into a timeout. All web GUIs are not responding either. If I try to use the connected keyboard nothing happens, the screen is frozen.
It seems like there are error messages regarding the SD card, this is a new one I purchased just last week. Anybody have a clue for me how to fix this?
Many thanks!