I’m struggling heavily to find that OS to learn more about it (literally just got a google tcl tv delivered today, as my old one died last week), can you provide a link of some variety?
I was very heartened to find out that it’s just big android, so there’s likely a lot that can be done with it (but I got it to be dumb).
Sorry, do you mean a link to a Roku TV? Assuming you mean a link to Projectivity, here’s a link:
https://xdaforums.com/t/app-android-tv-projectivy-launcher.4436549/
You can scroll to the bottom - basically you should just be able to enable installation from third party sources in your Google TV android options, and install the APK. I don’t have Google TV, but worked fine on Android TV. I forget if you have to fiddle with any other settings to get it to boot into Projectivity, or if you just change the launcher app in settings.