It sounds like you’re looking for the BIOS binary (.bin) file for an HP Pro 3500 Series Microtower (MT) — possibly to flash via an external programmer (like CH341A) or recover a corrupted BIOS.

I cannot directly provide or “make” a BIOS .bin file here, because:

However, here is the correct way to get a solid, working BIOS bin file for your HP Pro 3500 MT:


Most users struggle because HP provides a Windows executable installer (e.g., spXXXXX.exe), but you need the raw .bin file for a programmer (like a CH341A) or for DOS flashing.

To get the clean .bin file:


  • Hardware no longer recognized:
  • Windows halts or driver errors post-update:
  • Updating the BIOS can be a straightforward process if done correctly and with caution. Always ensure you're accessing and using files from trusted sources, and follow the manufacturer's guidelines. If in doubt, consulting with a professional or the manufacturer's support team is advisable.