Hello, this is 2012 Z68 platform … MSI is not the only one not providing further updates to this platform… as expected past a decade.
If you wish to try an a bios mod file (@your own risk) with updated DXE/oROMs, you may take a look into this tool: [Tool Guide+News] “UEFI BIOS Updater” (UBU) - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)
You will get something like this, original:
After:
with updated mCodes:
Option to update the Intel ME8 FW also possible (side operation from bios mods), latest is 8.1.70.1589, guidance here:
Intel (Converged Security) Management Engine: Drivers, Firmware and Tools (2-15) - Special Topics / Intel Management Engine - Win-Raid Forum (level1techs.com)
Suggested method to flash the bios mod, M-Flash or USB boot to DOS, further guidance here:
[Guide] How to flash a modded AMI UEFI BIOS - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)
Good luck