RAR package of 1.50 MB coded 4MPSV-20, apparently a later version, possibly 2.0, of the same series as the 4mpsv-11 file. The name does not reveal the device, maker or content type, so inspect the extracted files first. Compare them with the 1.1 version to see what changed. When flashing any image from it, keep a backup of the original chip, and check that the size and identifiers match the target hardware.
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 @schematicslaptop. 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.
7-ZipWinRARThe Unarchiver (macOS)