Lots of technical questions being posted here. Despite the fact that this is a user-to-user forum with no AMD engineers present.
I suggest you first go to where AMD furnishes these:
Okay the same link I have bookmarked as @kingfish goes to the same broken link.
So either the AMD site is down due to maintenance or AMD took down the site to maybe upgrade it or change it.
I suggest you wait at least one day or maybe a week and try again to see if the site is up again.