Firmware for the Acer B85H3-AM desktop motherboard, supplied as a RAR with 4 MB and 8 MB images according to the name. Different sizes usually correspond to separate flash chips or capacity variants, so read the markings on the SPI chip before choosing which file to write. Use an SPI programmer, save a backup of the original contents first, and verify the written data. An image that does not match the chip size will not fit, and a mismatched board model can leave the system dead.
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 →