MSI Z170M Mortar 7972vAC BIOS - Updated Video, LAN and CPU Microcodes with UBU v1_79_17 then Updated CPUID 906E9 EA to microcode EC via MMTool - NB I used MSI BIOS MFlash to program the non-removable 64mb chip but a CH134A programmer would work also:
E7972IMS.zip (7.01 MB)