BIOS binary for the Acer E1-472 on Wistron board 12243-1M, zipped to 3.09 MB. The 5-digit dash-suffix pattern is Wistron numbering, and the -1M suffix marks the board variant, which differs from the 12243-3 revision. Technicians program such a dump into the SPI flash with a CH341A or similar tool to recover a bricked or non-booting laptop. Always read and store the existing chip contents first, confirm the size matches the chip, and verify the PCB number.
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 →