Release build of BLBL version 1.3.1, a third-party Bilibili video client for Android TV and set-top boxes, packed as an APK of about 6.6 MB. It is an application, not a repair file. Compared with the API19 build of the same version, this standard release likely targets newer Android versions, so use the other build on Android 4.4 devices. Install it by sideloading with unknown sources enabled, and because it does not come from an official store, scan it before installing on a customer device.
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.