BIOS for the ASUS Z170-A motherboard on the Intel Z170 chipset, labelled 1.04 and marked as OK, in a 14.1 MB RAR archive. The larger size compared to the 1.03 file suggests extra content, possibly several images, so inspect the archive first. Such files are written to the BIOS SPI flash with a programmer when the board is bricked. Save the original chip before writing, confirm the board model on the PCB, and check that the extracted image size equals 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 .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 →