BIOS image for the Lenovo IdeaPad Z570, marked repeatedly as OK to indicate a verified working read. The 4 MB size matches a 32 Mbit SPI flash chip. No board revision or graphics variant is specified, so check that the PCB matches before flashing. Technicians write such a dump with an external programmer to revive a laptop that fails to POST after a corrupted update. Read and store the original chip contents first and verify after programming to catch clip contact errors.
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 @biosbigarchives. 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 →