I've done that with the one I have here. noticed the menu you pointed out. this one is greyed out. going to try somehting outside the square. nissan dealership still waiting on infiniti to get back (I'll chase them in the morn again.) to me.
theres a few things in diagnostics that point to language but I believe its still software based.
going to look on ebay for a part number to compare what I have vs the 'correct' version.
btw the buttons and screen are just that..
skizo,
the CD's you have - what EXACTLY are they - maps or data?