Yes, I've tried ordinary updating, says it's up to date. Damnedable lie. Tried a factory reset, same issue.It had gone without internet access for several years, I think that hiccup plus Hisense being bought out added to the complication. Any ideas on how to remedy this situation?
my main motivators are it's occasional skip in audio and horrible lag input gaming. The last one probably can't be solved but \(._.)/
If there is no update from your manufacturer, there is no update. Your TV doesn't even seem to be running Android TV, just Android.
Once a "smart TV" stops getting support after a few years, let it be a dumb TV and get an external streaming device.