Since Android 4.4.3 is an older OS, you need a compatible version. SmartTube (Official Site) or trusted mirrors like to find legacy versions that support Android 4.2+. Stable Release Code : If using the "Downloader" app on your TV, enter code Install the App Open your "File Manager" or "Downloads" folder. Select the downloaded APK file and click
Searching for an APK to run YouTube on older versions of Android, specifically Android 4.4.3 (KitKat) smart youtube tv apk android 4.4.3 free download
: The app does not require Google Play Services to function. Optimized Performance Since Android 4
: It does not require Google Play Services, which often fail or aren't present on older, uncertified Android TV boxes. uncertified Android TV boxes.