Duplicate copy of the StarTrack Platinum II firmware build V1.27B1, with the same 3.85 MB size as the other V1.27B1 package; the (1) suffix marks it as a repeat. Compare the two archives or their checksums before choosing one. The contents should be the receiver's flash image, possibly with a loader. Flashing is usually done over RS232 with the vendor's upgrade utility, or by writing the SPI flash directly with a programmer. Keep a dump of the original chip, and confirm that the board and tuner variant match before writing.
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.