I have upgraded my internet package and with it got a tv box that streams movies, tv shows as well as iptv. It is powered by android tv. Honestly, I don't the tv box, i have Netflix, amazon and apple tv+. But a simple android tv would be useful for future projects. The problem is that my ISP installed a launcher app/skin/theme or whatever it is called, basically, some settings are disabled, i am forced to use their app.

I wanted to reset the device but it only resets the data, it just resets their app.

Is there a way i could unlock and reset it back to android tv or flash android tv to it?