I have been checking the last few weeks for a bios update for the Asus ROG-CROSSHAIR-VI-HERO motherboard. A new update was released Jan 30th 2018. I have not updated to the new Version 3502 BIOS. I am curious if anyone else has and can confirm that it fixes the Spectre Variant 2?
I may give it a try within the next few days and report back, and confirm with the InSpectre tool.
references:
https://www.asus.com/us/Motherboards/ROG-CROSSHAIR-VI-HERO/HelpDesk_BIOS/
https://www.grc.com/inspectre.htm