RAR package with firmware for the StarTrack SRT-5700 HD receiver, build dated 12 September 2018. It serves to update the software or restore a receiver that hangs on startup or behaves erratically after a bad flash. Use the USB update procedure, or program the flash chip directly if the loader is damaged. The same date appears on firmware for related SRT models, so double-check the model label on the box before installing, and save the existing image so you can revert if needed.
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 @tvsoftwareworld. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.