Firmware archive for the Acer Aspire 4520 with the MS2211 model code, AMD platform version. No motherboard number is included, so verify the board code printed on the PCB before using it. The RAR is 563 KB, consistent with the small BIOS chips of this era. It is used to reprogram a corrupted flash on a laptop that will not POST. Read the existing chip with a programmer and keep the backup, then check that the extracted image exactly matches the chip size 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 @Laptopdesktopbios. 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 →