Dmifit Tool And Hpbq138.exe -

At the FreeDOS prompt:

C:
CD DMIFIT
HPBQ138.EXE

(Or run DMIFIT.BAT if present.)

The standard operational procedure for using DMIFIT and HPBQ138 involves the following steps: DMIFIT tool and HPBQ138.EXE

Once HPBQ138.EXE loads, you’ll see a simple text menu:

Use the keyboard to select options. Changes are written immediately to the BIOS chip. At the FreeDOS prompt: C: CD DMIFIT HPBQ138

When you extract HPBQ138.EXE (using a tool like 7-Zip or by running it with /e or -d parameters), you typically find:

DMIFIT.EXE
BQ138.BIN (or similar)
DMICFG.INI
WRITEDMI.BAT
README.TXT
FLASH.BAT

The WRITEDMI.BAT script usually contains commands like: (Or run DMIFIT

DMIFIT.EXE /F BQ138.BIN /S serial_number_here /P product_name_here

Using the wrong version of HPBQ138.EXE with a given DMIFIT tool wrapper can lead to:

Thus, version matching is critical. For example, HPBQ138.EXE is designed for the 786C1, 786C2, and 786C3 system boards. Trying to run it on a newer HP ProDesk 600 G2 will yield a "Hardware not supported" error.