I found the version you're looking for on google on a french site called "touslesdrivers".... I'd give you the link, but my reply would go to moderation and might not show up for several hours..... just paste the name of the tar.xz file you're looking for into a google search, and the link I'm talking about should be the third result.
Personally I only trust drivers directly from the vendor or manufacturers website, but if you need a certain version and AMD is no longer hosting it themselves... it might be your only option.
Edit: Ummmm, the file downloads just fine for me from the link you provided though, so it appears AMD is still hosting it, leaving me a little confused as to the nature of your question?