It syncs the Build ID to match the factory OS restore image requirements.
Traditionally, HP technicians used separate command-line tools like DMIFIT or NBDMIFIT run via a bootable DOS USB. However, modern hardware (UEFI BIOS, NVMe drives) broke those legacy tools. hp doctor dmi tool all in one work
Enter the HP Doctor DMI Tool All-in-One. This is a unified utility that: It syncs the Build ID to match the
Solution: Your HP model may require a UEFI version of the tool. Look for “HP DMI Tool UEFI Shell Version” instead of the DOS version. Enter the HP Doctor DMI Tool All-in-One
Refurbishers need to match the serial number on the chassis with the one in the BIOS. Using this tool, you can re-sync the BIOS with the physical sticker.
There is no single official "All-in-One" tool from HP. HP releases different versions of their DMI tools (NBDMIFIT, ANDMICFG) for different generations of motherboards (e.g., Intel series 6, 7, 8, 9, etc.).
The "All-in-One" version you see online is typically a hacker/modder compilation. It bundles several different versions of the official HP utilities into one folder with a batch file menu that attempts to auto-detect your chipset or lets you select the version manually.