Android APK of the Dangbei desktop launcher in a slimmed-down build made for LeTV (Letv) televisions, dated 20241221. Despite sitting in a repair index it is an application rather than firmware: it replaces the stock home screen on Android-based smart TVs or set-top boxes. It installs from USB storage or via ADB. Lite builds strip features to run on low-memory hardware. Check that the TV's Android version is compatible and keep a way to restore the original launcher if the device stops booting to the home screen.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @tv_software. Enginerys does not host this file.