A bit of a mess…
I believe your trying [Guide] Clean Dumped Intel Engine (CS)ME/(CS)TXE Regions with Data Initialization - Special Topics / Intel Management Engine - Win-Raid Forum
If so, you work on a full SPI bios image or me_region only…now read the guide again bur this time a little more attention to details and specially [D4. CSME 11 - 15 & CSTXE 3 - 4]