RAR archive of 8.39 MB with an uninformative name giving no device, board number or brand. The name suggests an output image, possibly a modified firmware dump produced by an editing tool, but the contents must be checked after extraction. Identify the target board before use and compare any image size with the flash chip it is meant for. Never write an unidentified image to a board without first reading and saving the original chip with a programmer.
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 @laptopchiplevelexpert. 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)