Firmware archive labelled ET2040I, packed as a 3.49 MB ZIP; the name carries no brand, board revision or version, so the model code is the only clue. ET-series codes are normally used by ASUS for all-in-one PCs, but verify the unit before use. Contents are likely a BIOS image for writing to the SPI flash chip with a programmer to recover a dead or bricked system. Unpack it, check the image size against the chip capacity, and keep a full read of the original chip before overwriting it.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →