E90W SEATALKng communication issues

[onewadd]

Thanks Chuck. I did have two power sources and changed it to one balanced source and resolved the communication concern. With that fixed I am now updating the software on the EV-1 Pilot. I've downloaded the software, unzipped it to the root if a blank CF card. Using my E90W MFD I boot it and I can see the different software updates for:
CCU update v2.17
ACU update v2.17
P70 update v3.05

I have performed the CCU update without issue however, I find I cannot scroll down (or up) to select the next software or the next unit using any of the keys or the track pad. The touch screen is also inoperative in this mode. The only key on the E90W MFD that works in this mode seems to be the "cancel" key which will take me to back to the previous screen. All keys and touch screen work fine in normal use. Is there something I'm missing.

Wade