[fafzv]

Is this something that can be fixed with a software update or is it basically game over?

I've got an MS-7E07 which is in theory not affected, but who knows...

[DethNinja]

If MSI ever updates the BIOS of your motherboard with new / assumed to be unleaked Intel keys, then you will need to reflash it with the new BIOS.

So, you need to do a manual BIOS update to fix it.