Hello Zamoct, the microcode of the processor updates automatically through BIOS updates on your board.
The latest BIOS available for this motherboard is version 0125. You can download it in the following link Intel® Download Center
Since Intel is out of the motherboard business, there are no plans on releasing new BIOS versions.
If you not plan to release a new bios then make your bios unlock so community can upgrade it with micro code. other brand motherboard can update and have all the function but DP45SG cannot. i felt a bit disappointed because i trust intel will give the best motherboard that money can buy at that time. right now my processor lost some function like Enhanced Intel SpeedStep® Technology, VT-X and SSE4.1
Right now i can only use either win 7 64bit or win 8 64bit or win 8.1 32bit not the 8.1 64bit