ZIP archive holding BIOS firmware for the Lenovo Z50-70 notebook, as the model name suggests; no board number, revision or chip type is given in the file name, so the contents should be checked after extraction. Images like this are typically written to the SPI flash with an external programmer when a laptop no longer powers on or shows a blank screen after a failed update. Read and keep the original chip contents first, confirm that the image size matches the chip capacity, and verify the board model printed on the PCB.
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 →