@derthomas Sure you can, however that window would allow the TV to download an enshittified new FW and probably to send all the gathered telemetrics back to CCP/Evilcorp, too.
I've seen three year old once flagship 8K TVs to be measurably slower compared to their out of the box experience, just because a bloated FW has been applied. Some may reason that TVs should be replaced every five years, but that is not an avenue I want to pursue for financial and ecological reasons.
Am I too paranoid? 😁