I never want to get a smart TV, but I found this exact TV (Toshiba FireTV) on the side of the road and decided it would be a fun project to try enhancing its privacy as much as I can. It did not come with the remote or any other accessories besides the TV, so if there is any way to pair an iPhone/Pixel as a remote that would also be good. Is there any way to replace the software with something open source, and anything else I can try?

Thank you all!