Got an el-cheapo Sony KDL40R510C. The YouTube App sux, and Sony has no update. Been told it runs Android? If so do I have to rely on Sony for an update or can I force it to go to some Android App store and try that software?
Very doubtful that Sony would take a chance on you bricking your TV. You would have to sideload the APK the same way you would for any android device. I doubt that you could access the menus to do that but take a look.
https/www.howtogeek.com/280763/how-to-sideload-apps-on-android-tv/