check in your mb boot screen for the bios it have a bios rev. check to see that there one newer then the one on msi web page.
if there is more then one i do them in order. 2.3...2.4..2.5..
download the files one at a time then expand the bios file then copy it to a usb stick.
you then reboot and go into the mb bios screen under advance mode.
there be a flash update program inside the bios.
first time you run it make sure to save the old bios first. to update to the next bios you point the bios flasher program to your usb stick. dont use the windows bios flasher it brick your mb.