

The ME bootrom checks the firmware signature.Replacing the ME firmware is not that easy because: If ME firmware is absent, the computer freezes about 30min after boot.The ME can be disabled (no Fimrware is run by it).Controls the computer's original networking adapters.Has access to the computer's memory/RAM.Disabled: No Ethernet controller fimrware.Inside the ethernet controller, disabled: no Ethernet controller fimrware.

See Intel_82573_Ethernet_controller for more details. The Ethernet controller is capable of running some fimrwares( like AMT 1.0), but the hardware is not configured to do it on that machine.
#What is intel management engine firmware update tool code

initializes the hardware, before the boot firmware(BIOS/EFI/UEFI/Coreboot/etc.).See the Wikipedia AMT article for example use cases. permits out of band management of the computer.The Intel Management Engine (abbreviated "ME") is a CPU which: 7 Using a smaller version of the Intel ME.5 Why there is no replacement for it yet.
