yeh, doesn't work at all, no lights when holding any of the shifters on either levers, no movementson the front and rear mechs.
I'll be taking the shifters and Junction A to Condor today as ribble said it's just a firmware update as 2 shifters being defective is highly unlikely.
Does sound unlikely that both shifters would have issues. You can unplug one and still use the other, or unplug a mech and use the other. It's all independent.
Holding junction A puts it in trim mode.
Have you tried holding a shift lever till you get a light. That's the battery indicator.