5.20 [upd] | Dmiedit

The most common method is using the Windows-based command-line tool. 1. View Current DMI Data Run this command to see all current DMI information: amidewinx64.exe /dump Use code with caution. Copied to clipboard 2. Update Serial Number

The utility is the gold standard software tool developed by American Megatrends International (AMI) for modifying System Management BIOS (SMBIOS) data directly within a device's firmware. This powerful, professional-grade program allows system administrators, original equipment manufacturers (OEMs), and advanced technicians to edit vital hardware strings—such as motherboard serial numbers, system UUIDs, and asset tags—without flashing or completely rebuilding the underlying BIOS/UEFI firmware.

| Action | Command / Key | |--------|----------------| | Load a file | File → Open or drag/drop | | Save as | File → Save As (backup originals) | | View hex | View → Hex Viewer | | Toggle edit mode | Click on a byte value → type new hex |

：

To understand how operates, it is critical to understand the architecture it modifies.

: Some manufacturers implement BIOS write protection that may prevent DMIEdit from applying changes directly within Windows. to use this utility outside of Windows?

: Assigning or correcting Serial Numbers and Asset Tags for motherboards and chassis. dmiedit 5.20

The main interface is a table of strings and hex values. Common fields to edit:

There are plenty of DMI editors out there, but version 5.20 has gained a cult following among technicians for three specific reasons:

Extract the files to a dedicated folder on your local drive (e.g., C:\DMIEdit ). The most common method is using the Windows-based

In the Command Line version, navigate to your directory and type: AMIDEWINx64.exe /dump Use code with caution.

Available in various execution environments, including Windows (GUI and CLI), Linux, and UEFI Shell.