At the moment I can answer you becouse I have flashed with vers. 3.07 the bios, before was 2.58, but the first time I flash with AMIFLASH.COM permit me to backup de bios but tell me an error on flash.
After that I have tried to flash with AFUDOS.EXE and it warn me about some problem and sugget me some options for safe, after that it tell me that the process of update go ok, but after I restart the my 3400+ have the fun running every time more fast and no video message, so I shutdown the PC.
Now I have reset the CMOS ( with jcmos jumper without current and put out the battery)
Now I can tell you that the bios update to 3.07 is ok, with my 3400+ ,
but putting the x2 3800+ the fun run everytime and nothing appear on the video.
I have found that now the problem are the to use 2 banks of RAM.
I had 2 banks of 512 MB of RAM (PC3200U) DDR-400Mhz CL3 , but the only one at time work, in the the posion DIMM1,
One is infineon and the other is Elixir, but every two have the same CL3 and PC3200U.
What is the problem?
I have understood weel with 2 banks the athlon x2 work with both together, so is more fast to have 2 banks installed.
what's your set up?