I wanted to add to this.. I noticed this problem today and stumbled across this thread. It appears that the upper deck is working normally. The lower deck is where the problem persists. The lower deck has the lights swapped. So, when the seatbelt sign comes on in the cockpit, the mobile lamp illuminates in the lower deck cabin and when the mobile sign is turned on in the cockpit, the seatbelt sign illuminates in the lower deck of the cabin. Hopefully this helps. Thanks,