@ plutomaniac
There are several reports of Microsoft Surface machines loosing touch after cleaning ME. One proposed solution was to change settings for ISH in FIT (link to badcaps), but that did only work for some machines.
I happened to come over a Surface pro 4 with still working firmware after a memory exchange (link to thread)
The user was able to run MEInfo on a firmware with a cleaned ME and and his own still working firmware.
The firmware with the cleaned ME had an identical bios region and identical flash descriptor, so settings in FD and bios region (NVRAM) can’t be relevant here. Still the cleaned ME didn’t have touch and the output of MEInfo was different:
I searched here, closest was this thread, but these are FD bits as far as I could find out and FD is unchanged.
I unpacked ME regions of the working (old118.bin) and cleaned (031024e.bin) firmware (MEA -unp86) but couldn’t find any hint where this settings could be stored in MFS.
Tried several FIT versions down to 11.0.0.1202 - the version the Surface firmware originally was composed with. But these settings aren’t covered by FIT and accordingly don’t show in the xml- files.
Read the bringup- guides as far as available, but there’s only information on Flash Descriptor Records.
Do you have an idea where to search from here?