I'm trying to add a second enode4 in line with my first. The new one has a different firmware version. It looks like it is getting weird data. The Activity LED is flashing crazily even with the board off. I believe the IP addresses, etc. are correct, since I can send data and make the LEDs I am running work. But when I am sending nothing from the board, the LEDs flash. Is this a firmware incompatability issue, or should I look elsewhere? 1st unit is B2.0 V2.0, 2nd just says v2.3. I can't find any firmware info on Elation website.