Raw 8 MB BIOS image for a Wistron-made motherboard with board number 19861-1; no laptop brand or model is given in the name. Wistron is an ODM that builds boards for Dell, HP, Acer and Lenovo, and it uses this five-digit-dash numbering. An 8 MB binary suits a 64 Mbit SPI flash chip and is normally written with a CH341A, RT809H or similar programmer. Back up the existing chip first and confirm the chip capacity, since a mismatched image 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 @afsbiosfree. 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 →