Compressed BIOS package for the Acer Aspire One AOP531p, a 743 KB RAR archive. The name gives the model but no board number or firmware version, so open the archive to see whether it holds a raw dump or vendor flashing files. Raw images are written to the SPI flash with an external programmer when the netbook no longer posts. Check that the extracted file size matches the chip capacity, read and keep the current chip contents before erasing, and verify the board against the model name.
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 @ComputerBIOSBinFile. 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 →