Do you see anyone there talking about an EC file or IC on the mb or sharing any file of it?
You have main bios IC and next to it a liitle top is the NVidia FW.
Re-initializing the CSME FW:
[Guide] Clean Dumped Intel Engine (CS)ME/(CS)TXE Regions with Data Initialization - Special Topics / Intel Management Engine - Win-Raid Forum
That’s all from me, nothing more to add, good luck.