I have successfully used the patch from this website for this MB for several bios releases (1.50, 1.60, 1.70), however the latest version (2.10, released April 30th) has a significantly different DSDT than earlier versions and the patch no longer works.
Attached is a clean copy of the DSDT extracted under Windows via DSDTEditor
z68 Pro3-M 2.10 Clean.rar