This keyword likely refers to a specific or build number (6.17.391) of the YouTube application tailored for Smart TVs. Keeping your app updated is essential for accessing the latest features , ensuring security , and maintaining compatibility with your TV's operating system. How to Update the YouTube App on Your Smart TV

While the numerical versions evolve, here are some of the most significant, user-friendly features YouTube has recently launched on its smart TV app:

Fix YouTube Error 617 / 391 on Smart TV: Download and Update Guide

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