BIOS dump of 8.00 MB labelled S300 GM, with no brand or board number given in the name. GM may indicate a version using the processor's integrated graphics, but that is not certain. The image suits a 64 Mbit SPI flash chip and can be written with a programmer such as a CH341A. Identify the exact laptop and motherboard number before use, since several makers have used the S300 model name. Always read and keep the original chip contents before writing.
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 @biosbigarchives. 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 →