BIOS dump for a mainboard named LKL-1 with board number 17821-1N, sized for a 16MB flash chip, packed as a RAR of roughly 8.6 MB. The name does not state the laptop brand or model, so identify the system by the number printed on the PCB. The image is meant for writing to the SPI chip with an external programmer when the board is dead or the firmware is corrupted. Read and store the original contents first, confirm the chip is 16MB, and check the board number matches exactly.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →