OK.
Do you have a wire soldered from d0 on motherboard to ground ( like the metal circle around a screw hole ) and another wire soldered on the chip from BT to pin 9 ( pictured as G in the duomodchip.com diagrams )

if not then you need to fit these link wires and make sure you fir the BT to G wire on both duox2's The good one that you boot on and the bad one also.
Then try flashing again. If you have allready got these link wires in place theni am afraid you may have damaged the chips.
Maybe you would want to send them on to me or chancer for testing purpose. I can't really understand how a new bios could kill a chip but i have seen a few weird things from this bios posted now.
HackDaBox !