The primary purpose of the tool is to write new firmware to the NIC. This is often required to fix bugs, security vulnerabilities, or to ensure compatibility with new virtualization standards.

For LAN-On-Motherboard (LOM) implementations, it is often better to use manufacturer-provided tools rather than generic Intel utilities. eeupdate64eefi vs. Other Intel Tools

The primary function of EEUpdate64eEFI is to flash the Non-Volatile Memory (NVM) or EEPROM of Intel Ethernet controllers. This process updates the Option ROM or firmware that controls the network hardware. It is commonly used by system administrators, OEMs, and IT technicians to resolve hardware compatibility issues, apply critical security patches, or enable new features on network interface cards (NICs) and onboard LAN controllers.