Firmware dump for the C14CU51 board, version 1.0, used in the Positivo Unique S1991 and marked OK, a common tag for an image reported as working. The 8 MB size matches a 64 Mbit SPI flash chip. Write it with an external programmer when the laptop is dead after a failed update or corrupted BIOS. Read and keep the original contents before erasing, check the chip part number and capacity, and verify the write afterwards.
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 @acheibios. 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 →