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It is true that there's a lot of confusion regarding this board/cpu and the right BIOS version.do note that the 2.x bioses are often not the right ones to go with, onless you have a newer cpu (not Sempron).What cpu is installed? (Clawhammer, Newcastle)?
Run CPU-Z and look there ==> http://www.cpuid.com/cpuz.php
Fall back to 1.9 bios. I think you'll be fine then.