Today I updated the driver for the DMX engine to 2.2 (removed and replaced) upgraded the firmware in the ES module to 5071. I have made the connection in composer to the correct serial port on the IO extender (pin 4 removed) but cannot retrieve the firmware version? I have tried a 3.5mm C4 cable from serial 3 on the EA5 as well with no luck. I have re-run the firmware update again but this hasn't helped. It was working fine.