"If it ain't broke, don't fix/update it." That's my moto. Apart from Firefox, my banking apps and Signal, I don't update anything, ever. Not the TV, not the media-box, nothing. Eventually it leads to tragedy and discomfort. Sometimes I custom update my Win machines for Security patches, but anything that has to do with usability, UI, function, etc. I leave it as is. (I firewall all my apps in my machine anyway).
I don't even give my TV the wifi password. I'm paranoid that it's going to update something without my consent. I fear the day they come with cellular modems and bypass the wifi entirely.
one pin [pin14] on the HDMI connector allows this to happen; disable it and that problem wont exist until specs & standards revision happens.