I believe it only works with the firmware from the V1 IIRC. I could be wrong though, which would be nice since I'm sure the newer firmwares are much better.I should also mention that the old ED64Plus could be updated with Krikzz's firmware and it worked pretty great according to others. Nobody has tried it on this version yet as far as i can tell. Im too much of a puss to try it myself lol.