What utility must be used to update the serial number and machine type model number after replacing the system board?

After replacing the system board, it is essential to update the serial number and machine type model number to ensure the system operates correctly and is properly identified in any service records or warranty systems. The Maintenance Utility or BIOS Update Utility is specifically designed for managing system configurations and hardware settings, including updating serial numbers and model identifiers.

Using this utility allows you to interface with the hardware components' firmware and make necessary changes that reflect the updates made during a system board replacement. It ensures that the new hardware is registered correctly in BIOS, preventing potential system errors related to hardware mismatches or issues when seeking support or updates.

The other utilities mentioned serve different purposes which do not specifically focus on updating machine identification information. For example, the Firmware Update Utility is used primarily for installing updates and patches to improve system performance or security, while the Diagnostics Utility is more focused on testing hardware components for functionality. The System Recovery Utility is intended for restoring the operating system to a previous state and does not involve making updates to the hardware identifiers.