IH61M motherboard archive, version 4.2, packed as a 3.65 MB zip. The model token suggests an Intel H61 micro-ATX board, a design produced in many revisions, so the version 4.2 marking matters here. The contents are not specified, though the size fits a BIOS dump. Before programming, confirm the PCB carries the same version number, since images for other revisions may not boot. Read and archive the original flash first, and confirm the image size equals the SPI chip capacity.
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.