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Roku and TCL are being sued for allegedly bricking smart TVs with bad updates
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
My main TV is an originally bricked Vizio from a bad update. I was able to buy a replacement logic board for $20 to get the TV to work again. When I reassembled it I intentionally never connected the TVs Wifi antennas to the logic board. The TV has been operating fine for close to 2 years now having never been attached to the internet.