It seems that this Beta/Test? Bios was only directly available from ASRock. I only find this hint.
Google Translate:
https://translate.google.com/transla...3D7%26t%3D7847
(Origin Page:
Phenom II X4 955BE i plo�a AsRock ALiveNF5-eSATA2+ • Linux za Sve forum)
But the file doesn't exist any more.
I think you should ask the ASRock Support directly.