Hello,
My TV (a Sony Bravia) shows Android TV version as 9. I am curious whether there is a way to update it to Android 11. I wouldn't usually bother but some app I download keeps crashing (doesnt even open) and the publisher is either unwilling or unable to help.
No you can't update to 11 unless Sony provides it.
That's a long process to adapt every app, service, process to a new Android TV version.