BIOS package for the Lenovo B50-45 notebook, stored in a 2.55 MB ZIP. The file name carries no board number, revision or version information, so the contents should be inspected before use. Technicians use such dumps to restore an SPI flash chip on a laptop that will not boot, shows no image or has a corrupted firmware, writing the image with an external programmer. Compare the board code on the mainboard with the dump source, keep a backup of the original chip, and check the image fits the chip capacity.
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 →