MSI X99A Tomahawk BIOS freeze

Hello

I may have made a foolish move with trying to update to the latest bios. The board itself was working good but i updated anyway to 7A54v22 from the 2016/08/08 bios.
Since than i cannot save anything inside the bios or enter mflash. However the bios is still active(the core voltage changes and the clock is counting) but i cannot move the kb/mouse. The pc loads into win10 and is usable normally.
Also funny thing, my other pc has an MSI x470 gaming pro max and does freeze when entering fixed core voltage.

If i forget to mention something just let me know

Edit: getting an error code A6 which is an SCSI detect error. But why would i need a drive if im booting into mflash?