ZIP archive, 1.81 MB, with BIOS firmware for the Lenovo G505 and G405 notebook family. The name lists no board number, revision or chip type, so inspect the archive for separate images and notes. Such files are written to the SPI flash with a programmer when the laptop shows no picture or fails after an update. Compare the extracted image size with the capacity of the flash chip on your board, confirm the board number, and dump the original chip before writing anything.
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 .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 →