4 MB binary BIOS image for a Toshiba system, labelled B551C, with FHRLSY1 possibly referring to the board, and marked OK, meaning it was reported working. The 4 MB size suits a 32 Mbit SPI flash chip. Technicians use a dump like this to revive a bricked board or one with a corrupted BIOS by writing the chip with a programmer such as a CH341A. Read and keep the original contents first, and make sure the chip capacity and the board match before flashing.
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 @biosarchive. 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 →