timidi, yes, just the latest version. I programmed the BIOS update from within the BIOS utility itself. That is the safest way.
After doing a search I found that you download the latest .rom file from ASUS for your mobo, put it on a freshly formatted USB stick. Formatted FAT or FAT32. place the downloaded .rom file on the root of the USB stick with an 8.3 name. For example, I named mine, ASUS3402.rom. Plug in the USB stick, reboot the PC, go into your BIOS settings and run the EZ FLASH utility from within the BIOS. It was very easy.
I am overclocking my system and after the BIOS FLASH, it kept my settings :-)
As far as audio interface problems, I believe it had to do with a recent windows update, probably Adobe Flash player.
My audio interface is working fine in Sonar X2 and Chrome and Windows. Seems to be having issues only with Firefox