Tiny 2 byte companion file for the Lenovo NM-C821 BIOS image, holding a flash status register value saved alongside the main dump. Some programmer software stores the status register separately so protection bits can be restored after writing. It is not a firmware image and cannot be flashed on its own. Keep it with the matching 8 MB NM-C821 binary, an LCFC numbered board, and only apply it if your programming tool supports status register writing and you understand which protection bits it sets.
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 @schematiclaptopramkushwaha. Enginerys does not host this file.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →