BIOS firmware for the Lenovo ideacentre AIO 300-20ISH all-in-one, built on the Compal board LA-C933P. The RAR holds a flash image for programming the BIOS chip directly with a hardware programmer, useful when the unit powers on with no image or after a failed update. Compal marks its boards with the LA-xxxxP pattern, usually printed near the board edge. Read and store the original chip contents first, confirm the board number matches, and make sure the image size equals the 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 @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 →