BIOS dump for a board labelled LMQ-1 MB with number 12298-2 and part code 48.4LY26.021, compressed as a 5.69 MB RAR; no brand is given. The 12298-2 and 48.4xxxx.0xx pattern follows Wistron numbering, so the laptop could be from any brand using that ODM. Match the numbers on the PCB before use. Technicians flash these images to the SPI chip with a programmer to fix boot failures; read and back up the existing chip and check the dump size against chip capacity.
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 @biosfilebins. 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 →