Flashing unsigned firmware on MSI motherboards
Flashing an unsigned (modded) firmware image on an MSI board isn’t as simple as using M-Flash on your modified image. M-Flash does signature verification before flashing the image, and as a result, a different method must be used when the signature is changed.
Requirements
Requires at least one of the following:
USB BIOS Flashback
JTPM/JSPI header
Flash BIOS button
Disclaimer: Flashing modified firmware voids your warranty. Proceed at your own risk.