ZIP archive of about 1.6 MB labelled Y570, which most likely refers to the Lenovo IdeaPad Y570, though the name confirms no brand, board number or version. Open the archive to see whether it holds a raw chip dump or a vendor update package and check the image size. Raw dumps are written to the SPI flash with a hardware programmer when the board will not boot. Match the PCB board number, and back up the chip before writing to it.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →