remember we are all running beta bios, as yet its not on the standard MSI download page - which currently lists a 1.6 as the latest. I did at one point notice they posted a 1.7 version public that required a USB stick to be made bootable to upgrade that also had an Intel ME firmware update on it as well as the bios, I installed that, it upgraded the bios and the ME firmware at the same time then it mysteriously dissappeared from the MSI site never to be seen again.... maybe the intel firmware has also had an impact?
I've still got it here I could try and post it if you guys wanted to try it but given it was torn down again I'd have to say "play at you're own risk".