4.00 MB BIOS dump labelled for a C850 laptop, most likely the Toshiba Satellite C850, with a 10028 code and an Intel Core i7 configuration, marked as working. The 10028 token likely refers to a board or BIOS identifier, but the name does not explain it. A dump like this is flashed to the SPI chip with a programmer to revive a board stuck without display. Confirm the number on the PCB and the CPU fitted, verify a 32 Mbit chip, and back up the current 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 @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 →