Asus E203MA BIOS, version 304 according to the file name, packed in a 5.48 MB RAR. A file like this is usually written to the board's SPI flash with an external programmer when an update fails or the laptop powers on with no display. Confirm the model on the bottom label and the chip capacity before writing, because an image that does not match the chip size will not program correctly. Save the original contents first so the serial number and any unit-specific data can be restored if needed.
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 →