ZIP archive, 342 KB, for a board named N61S with version 2.0 stated in the name. The contents are not described, so open it and identify the files before use; an archive this small most often carries a BIOS image. Because the revision is given, compare it with the version printed on the PCB, since firmware for a different revision may not work. Back up the original SPI chip with a programmer and make sure the image size matches the chip capacity 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 @laptopchiplevelrepair. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip