I have a Sony Ultra HD Bravia Android 4K TV.

I decided to access its shell and hence rooting it to have some more access and to run Linux on my TV. But there seems no way here to do so. Post 5555 is closed, so unable to use "adb". some ports are opened as shown by nMap, but neither in browser nor via NetCat they seem to give any suitable output. Got this script on Github: https://github.com/CFSworks/nimue

But don't know how to install it on USB and then run on the TV. Also, even this https://www.reddit.com/r/AndroidTV/comments/2gqh4x/how_to_root_adt1/ isn't much helpful. Anybody with prior knowledge with something like this on Smart Television ? Your help is appreciated. Thank you!