There is no 1.7 BIOS. The only BIOS on the site is 1.60
And beta bioses
You are Wrong.. bios 1.70 is coming this week and brand new...
But yes, the Asrock side is not actually.
It was postet on the Official german Facebooksite from Asrock http://www.jzelectronic.de/jz2/index.php