Anecdotally, the first Sony smart tv my grandma got (after her old tube TV died) managed to receive a firmware upgrade over the antenna cable (don't remember if

Anecdotally, the first Sony smart tv my grandma got (after her old tube TV died) managed to receive a firmware upgrade over the antenna cable (don't remember if it was cable TV or satellite). She certainly didn't have any internet in her home. Of course that led to a fun episode of "My TV is broken" (actually just showing a prompt to start the firmware upgrade), in general she got very confused by the smart TVs UI often...