BIOS firmware for the Acer Veriton N4640G compact desktop, archived as a 5.20 MB RAR; the name gives no board number, version or chip size. Check the extracted file to see whether it is a full SPI dump or a vendor update package before deciding how to apply it. For direct chip programming, read and store the original contents with a programmer, compare the image size to the flash capacity and ensure the board in your unit matches this model before writing.
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 →