Since this app is not on the Google Play Store, it must be sideloaded:
To get version 6.17.740 or the latest update, only use these two sources: Smart Youtube Tv 6.17 740
Note: If a website has "smarttube" in the URL and asks you to download an .exe file, or has flashy "Download Here" buttons with pop-up ads, close it immediately. It is a fake site. The real file is always an .apk and is usually around 40MB - 60MB. Since this app is not on the Google
Many Android TV boxes and Smart TVs manufactured between 2015 and 2018 are beginning to show their age. The official YouTube app receives updates that demand more RAM and processing power, leading to crashes or buffering on older devices. Smart YouTube TV 6.17.740 is lightweight. It utilizes a simpler user interface that mimics the classic "leanback" style of YouTube, reducing the strain on the GPU and CPU. For devices with just 1GB of RAM, this version is often the difference between a usable TV and a paperweight. XDA Forums (The Secondary Source):
One of the most requested features missing from the stock YouTube TV app is background audio. With version 6.17 740, users can minimize the app or turn off the TV screen while continuing to listen to podcasts, music videos, or documentaries. This is a game-changer for users who treat YouTube as a music streaming service.
Disclaimer: This guide is for educational purposes. Installing modified APKs may violate YouTube's Terms of Service. Downloading APKs from third-party sources carries inherent security risks.
If you have decided to proceed, here is a step-by-step installation guide for Android TV devices.