[mattacular]

I have a TCL and the factory firmware was out of date and apparently was affecting the picture quality in negative aways. My options were: 1) connect to wifi, update, then disconnect and trust that it's been done or 2) load the update onto a usb stick. I went with #2 but they could just remove that option in the future if they feel it's interfering with their ability to mine data off customers.

PS. the update fixed the picture immediately beyond what I was able to achieve by messing with the exposed configs

[me_again]

I guess you could change the wifi password after if you're worried the TV is secretly keeping the connection after you disconnect it.