is firmware and bios you mean is something named biosnds7 & biosnds8?It works with 2.6a, No$Zoomer with EX 0 and 5. You need firmware and bios to run it, however. Without those you'll be stuck at the "press start" screen.
I don't know if it works with other EX options, that's just what I have. Everything else is at default, but you definitely need firmware.