Lenovo CIH61IV mainboard firmware, version 1.0 per the name, stored in a ZIP of about 3.22 MB. The board appears to be an Intel H61 chipset desktop design. Technicians flash such images onto the SPI chip with an external programmer when a board is bricked or hangs before POST. Confirm the CIH61I marking and revision on the PCB, read and archive the existing chip contents before erasing, and check that the extracted image is the same size as the flash chip so it will fit.
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 @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →