Volume 16 of a split RAR archive labelled BIOS Acer, a full 9.00 MB segment of a larger collection of Acer firmware. A single part holds no usable file by itself; place all volumes of the set together and open the first one in WinRAR or 7-Zip to extract. Which models, board numbers or chips the collection covers is not stated in the name. After extraction, pick the image for the exact board revision, save the current SPI contents with a programmer and check that the image size fits 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 @bios_laptop. 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 →