BIOS image for the Dell Vostro 3558 laptop on Compal motherboard LA-B843P, credited in the name to FixTronix. The board number uses the Compal LA-xxxxP format common on Dell notebooks of that era. Technicians use such a dump to recover a board that will not post after a failed update or a damaged flash. Dump and keep the original chip first, confirm the PCB marking matches LA-B843P, and make sure the image size equals your SPI chip capacity before programming.
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 @fixtronix. 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 →