Yep I've got the 1.2 BIOS, haven't delved back into memory yet, just got triple rad setup for cpu so doing some poking with that. What OC/volts are you running on CPU? And did you change the SoC volts? (which I assume is the "CPU NB VOLTAGE" option)
I turned off auto and set my ram speeds at 2933Mhz, no problems there at all. Haven't tried to push further. Waiting until the BIOS's built on AMD's new microcode are released before I push the memory.
My system is pretty stable at the moment. 1.35 core volts, 3.8Ghz CPU speed. I left everything else on Auto and it passed hours of Aida64, lots of Cinebenches and some gaming. I will be interested to see what scores you get with Cinebench, My best score at 3.8 was 1511.