I see you have Bose speakers but I do not see a Bose headunit.
Now it could be because I am used to USA models.. but I would expect a Bose headunit to be marked.
I am not a stereo guy (even though I hope one would chime in) but i seem to recall bose speakers due to their construction can generally only be driven by Bose headunits. But I may be wrong..
We are about to merge with a bigger Nissan site and will have access to their parts connections soon.
I believe you are smart to try to replace only with a factory headunit since your unit also controls other functions such as the Nav.. that an aftermarket unit would leave broken.
I really hope someone else will chime in soon.