Asus has officially released the new bios (
0605) for the
Maximus XIII Hero board. For some reason it's not displayed under the "Bios & Firmware" section, however you can find it under the "Drivers & Tools" section, after selecting the OS, as shown below.
There is another bios version (
0610), however it's considered beta and i can't really tell if it's really newer or has been added to (0605).
So, to be safe, i would still recommend flashing the officially released one.
Drivers & Tools Link: https://rog.asus.com/motherboards/rog-maximus/rog-maximus-xiii-hero-model/helpdesk_download