Lenovo IdeaPad Z480 firmware in a 2.77 MB RAR archive. Only the model is given, with no board number, revision, version or chip details, so open the archive and identify the image before use. The Z480 has been built on more than one motherboard, so check the number printed on the PCB against any notes inside. Typical use is reflashing the SPI BIOS chip with a programmer after corruption. Back up the existing contents first and make sure the image size matches the chip.
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 @afsbiosfree. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →