Firmware image for the Lenovo IdeaPad Z500, 4.5 MB in size, with no board number, revision or version given in the name. That unusual size usually means the dump combines a 4 MB main BIOS with a 512 KB secondary chip and may need splitting before programming two separate flash parts. Inspect the file in a hex editor first, verify against the chips fitted on your board, and keep a backup of the originals. Writing is done with an SPI programmer such as CH341A or RT809H.
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 .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 →