NVIDIA System Update is included in NVIDIA System Tools with ESA Support package.
NVIDIA System Update (v3.00.17.00) add-on to the NVIDIA Control Panel:
Automatically checks for nForce and GeForce driver updates
Adds ability to update your system bios
Includes support to update firmware of Enthusiast System Architecture (ESA) components
Windows XP users must install Service Pack 1, at a minimum, prior to attempting to install this package. Failure to do so will result in the inability to support USB 2.0.
Installation of DirectX 9.0 or higher is required in order to use NVIDIA System Monitor.