Firmware archive for the HP ProDesk 400 G5 Microtower, Sousaphone board, revision A, with Q03 noted, which likely refers to the HP BIOS family but is not confirmed by the name. The 6.60 MB RAR differs in size from other Sousaphone uploads, so review the contents before use. Program the image onto the SPI flash with a programmer to recover a non-booting desktop. Back up the existing dump, check the chip capacity, and confirm the board code name on the PCB.
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 →