Embedded controller firmware read from a Winbond W25X40 chip, a 4 Mbit SPI flash, giving the 512 KB file size. The EC handles power sequencing, charging, keyboard and fan control, so a corrupt EC image can cause no power or no charge symptoms. The name gives no laptop model or board number, so check strings inside before use. Program it with an external programmer onto the same chip type, and save a read of the original first, since EC code is often board specific.
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 @biosfilebins. 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 →