RAR archive containing firmware for the StarTrack 2017 HD satellite receiver, described in Russian in the name. Contents are not listed, but such packages usually hold a software image and sometimes a short flashing guide. It is used to update the receiver or recover it after corrupted software, either through USB update or by writing the flash chip directly. Confirm the exact model and board revision before use, and keep a dump of the current flash so the box can be restored if the image misbehaves.
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.