Updating the Universal Unique Identifier and DMI/SMBIOS data

After the system board is replaced, you must update the Universal Unique Identifier (UUID) and DMI/SMBIOS data in the IMM on the new system board.

You can use the Advanced Setting Utility (ASU) and any of the following access methods to update the UUID and DMI/SMBIOS data:

• Locally (in-band)
  • Through the Keyboard Controller Style (KCS) interface
  • Through the LAN over USB interface
• Remotely over a LAN

You can use the ASU under any supported operating system, or you can use the Bootable Media Creator or a Windows- or Linux-based toolkit to create bootable media that contains the ASU. For information about the ASU, see the Advanced Settings Utility User's Guide and instructions for downloading and unpacking the ASU code at https://support.lenovo.com/uu/en/solutions/lnvo-asu.

The following sections provide instructions for updating the UUID and DMI/SMBIOS data, using the different methods for accessing the IMM2. The following conventions apply to the command syntax:

• Variables are shown in italics.
• Optional parameters are enclosed in brackets ([ ]). Do not type the brackets in the commands. If you omit an optional parameter, the default is used.
• Although the command syntax is shown in mixed case, the commands are not case sensitive.

• Locally: Keyboard Controller Style (KCS)
  This section describes the keyboard controller style interface.
• Locally: LAN over USB
  If you omit any optional parameter, the default value is used. If one or more default values are used and the ASU cannot access the IMM2 by using the LAN over USB access method, the ASU automatically uses the KCS access method.
• Remotely over a LAN
  If you omit any optional parameter, the default value is used.