I have a pair of tzt3 12 inch screens, I have one set as the master screen. I purchased the cmor download and received the code, all good when I plugged that code into the master screen, that chart populates on both screens. I purchased the recent update and that had to be downloaded onto a chip, I installed the chip in the master screen, but that updated map does not show up on the secondary screen only the master screen... please advise.