If you do a search back several months for "abit bios reflash" there are some descriptions of the reflash trick for the bh6 board I believe. I did find one of these that worked on my bx6 R2, so you might get lucky too. (I seem to recall that there was a short command line extension to be used when reflashing the bios and a longer one. The short did not work for me, but the longer one did.)
anvil