Optiplex XE3 ME FW issue/upgrade (MeSpiLock)

An ME update- that can be used with the already mentioned tools- can be extracted with Dell_PFS_Extract. Tools package for ME 12 is available in the mentioned thread. Would be interesting if the earlier ME updates worked or

The solution would probably be to re-configure / clean the ME region (in a dump of your bios) according to

Dump might be taken by FPT which is part of the tools mentioned.