Small 454 KB rar archive labelled PX848 Like Pro, containing firmware for what appears to be a desktop board model named PX848. The name does not give a brand, revision or version, so treat it with care and compare with the model silkscreened on the PCB. Older desktop boards often used 4 Mbit (512 KB) flash chips, which fits this size. A programmer can rewrite the chip when the board does not post after a bad flash. Save the original contents first and confirm the chip size equals the image.
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 @afsbiosfree. 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 →