Looks like an API versioning scheme for TVs manufactured during that fiscal year, if I were to speculate (FY2020 = Fiscal Year 2020). Remember that most TVs pro

Looks like an API versioning scheme for TVs manufactured during that fiscal year, if I were to speculate (FY2020 = Fiscal Year 2020). Remember that most TVs probably never get updated. Maybe they stopped because the API stabilized or they have mandatory auto-updates.