BIOS image for a Yoga 12 laptop, according to the name, provided as a 5.60 MB RAR; no board number, revision or version is given. The file is intended for reprogramming the SPI flash with an external programmer when the system will not boot or the firmware is damaged. Inspect the archive to confirm what it contains before use. Back up the original chip content first, verify that the board in front of you is the same model and check that the image size corresponds to the flash chip.
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 @biosfilebins. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →