I'm in love with the display... it's so tidy!
Just wait until the CID is fitted 
Once I've you've fixed it 
I have a theory about getting the NCDR pairing code as well... 
Drop me a PM 
Said theory on hold after a chat with a certain member who knows more about such things than I do 
Tempted to read the prom for an unpaired unit, then pair it with a knwon code and then do a hex comapre of the files to see where the differences are....this should give location of the code in memory (and format although I suspect it might just be HEX).
Should then have the ability to examine a coded unit and identify the code
That was going to be my method, but monitoring the CDC board. Seems I may be barking up wrong tree though, guess I'll have to do similar in headunit or display, but display scares me, and I suspect its held in a microcontroller in head unit, so probably getting a little out of my depth

I have be told a few bits by an active, knowledgable member in this section, but will not pass on specifics - not that many people here would have the capabilities anyway.
Your particular issue, Marks DTM, is I guess simply getting a depaired 2013 and depaired CID (and possibly a depaired CDC3, but this may not be required??) onto your paired 2013 and probably paired CID? Obviously, that would leave your GID useless. I have a depaired 2013 and depaired CID, and if I can get into Mother Tunnie's car (

), possible something with related to a CDC3 board.