[Guide] Clean Dumped Intel Engine (CS)ME/(CS)TXE Regions with Data Initialization

Can someone help to unpack this HP Z440 ME into a clean ME area that can be flashed with FPT:
https://ftp.hp.com/pub/softpaq/sp90001-90500/sp90102.exe

Or at least point to tools to do so?

Along these lines, what’s the latest version of ME 9.1? Anything newer than 9.1.45.3000 which is in this package ?