Firmware dump labelled BPC-H55KFL, described in the name as an original image for a 4 MB flash chip, stored in a 687 KB RAR archive. No brand or revision is given, so the exact board must be identified from the PCB silkscreen before use. The H55 token suggests the target chipset family only by name. Extract the image and check that its size equals 4 MB, matching the SPI chip capacity, then read and keep the existing contents before programming with a CH341A or similar tool.
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 →