A 4 MB BIOS image in raw .bin format, labelled only as OK, meaning the person who saved it considered it a working dump. The name gives no laptop model, board number or chipset, so its origin cannot be confirmed from the label alone. Open it in a hex editor or a UEFI tool to look for model strings before use. A 4 MB image suits a 32 Mbit SPI flash chip. Always read and back up the original chip with your programmer first, and compare the board number on the PCB with anything found inside the file.
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 @bios_laptop. 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 →