For Android 4.4.2 specifically, you use the latest SmartTube_stable.apk . Those require Android 5.0+. You need the legacy SmartYouTubeTV_beta_6.17.xxx.apk (version numbers ending in 6.17.x or earlier – typically build 6.17.916 is the last stable for KitKat).
Because Android 4.4.2 is a legacy operating system, you must use specific "Stable" or "Legacy" versions of these apps: : smart youtube tv apk android 44 2
Unlike standard mobile APKs that require a mouse toggle to navigate on a television screen, this application features a fully optimized grid layout. It responds perfectly to standard infrared and Bluetooth remote controllers. System Requirements For Android 4
It turns an otherwise obsolete YouTube experience into a fully usable, ad-free portal. However, it is a maintenance release – do not expect new features. The developer has stopped active support for KitKat since early 2023, meaning eventually, YouTube’s backend changes may break it for good. Because Android 4
For now, it’s the best – and only – way to keep your 2014-era smart TV, set-top box, or tablet watching YouTube in 2026 and beyond.
Copy the downloaded .apk file to a USB drive, plug it into your box, or download it directly using a browser on the device.