Raw 4 MB BIOS binary for a Lenovo desktop board designated IH61M, revision 1.0, marked in the name as tested and working. The IH61M code points to an H61 chipset platform, and the 4 MB size corresponds to a 32 Mbit SPI flash chip. Write it with a CH341A or comparable programmer after reading and archiving the original contents, since serial numbers and system data stored on the old chip may need to be transferred. Check the revision printed on the board before flashing.
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 @freeschematicdiagram. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →