Raw BIOS binary for an Acer desktop board marked B350AB4-M, labelled OK in the name, with a 16 MB image size. The B350 in the name suggests the AMD B350 chipset family, but confirm this on the board itself. The file is intended for writing directly to a 16 MB SPI flash chip with a programmer such as a CH341A or RT809H. Before flashing, back up the original chip and check that the chip capacity is 16 MB, because an image of the wrong size will not fit.
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 @bios_laptopomi. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →