HP Pavilion BIOS archive for a Wistron-designed board numbered 223077-1, with two board IDs, 085F5 and 08BF4, in the name. Wistron uses this five-digit plus dash revision numbering pattern for its boards. The board ID must match your system, as HP firmware is tied to it, so pick the right file. Program the SPI flash with an external programmer to repair corrupted firmware, after first reading and saving the original chip so serial and product data can be recovered.
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 →