The version you are looking for, Smart YouTube TV 6.17.391 , is an older release (June 2020) of a popular third-party, open-source application specifically designed for Android-based Smart TVs. While this specific version is often cited in guides for older hardware, there are significantly newer versions and alternatives available that offer better stability and "extra quality" features like 4K playback and ad-blocking. Latest Version Details The original Smart YouTube TV project by developer has largely been succeeded by
If you encounter a "617 391" style error or general connection failure, try these verified fixes: The version you are looking for, Smart YouTube TV 6
Settings > Security & Restrictions > Turn on Unknown Sources for the file manager you intend to use.| Claim | Reality | |-------|---------| | “Extra quality = 4K+ at 120fps” | YouTube on Smart TVs maxes out at 8K (on select models) but framerate is content-limited. No version “unlocks” beyond what YouTube’s servers deliver. | | “No ads forever” | Some modded APKs block ads temporarily, but Google frequently bans them. | | “Enhanced audio codecs” | Official version 617.391 already supports Dolby Atmos and 5.1. Extra quality mods often break this. | Prepare Your TV: Go to Settings > Security
: Most Smart TVs come with a built-in app store (like Samsung's Galaxy Store, LG's Content Store, etc.) where users can directly install or update apps, including YouTube. The best approach is usually to use these official channels for app management. Stability – Many users report that 617