I put this together for a cousin who does not understand tech and doesn't follow directions very well. It basically automates Troy's steps to enable adoptable storage on the ONN 4K box and was written for it but it works fine on my TCL android tv. Includes needed adb files. I can start a list of devices it works with if you try it on another device.
As with anything, it's presented as-is, your liability to use it blah blah.
Troypoint post
https://troypoint.com/android-tv-adoptable-storage/
Files
What the chances of this type of thing messing up my Sony TV? I have side loaded items on it, but since it’s worth much more than a little Android device, I’m afraid of causing damage to the TV OS with too much tinkering. I wonder if a factory reset would allow recovery from something bad.