16 MB BIOS binary whose name is a version code ending in WW, a format Lenovo commonly uses for firmware releases, but no model or board number is stated. The size fits a 128 Mbit SPI flash chip. Before writing, identify the target by searching the version string and examining the image with a hex editor or UEFI tool. Always read and save the original chip contents with your programmer and confirm the platform match, as a wrong image can leave the board unbootable.
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 @laptopschematics. 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 →