Keyboard controller (KBC) firmware dump for an Acer Aspire M3, meant for the EC-side flash rather than the main BIOS chip. Its size of 4 MB is unusually large for EC code alone, so confirm which chip on the board it came from and its capacity before writing. Corrupt EC firmware often causes no power, a dead keyboard or charging faults. Pair it with the matching main image, verify the board, and back up the original contents first.
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_laptop. 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 →