Its not a problem to make a working copy and it doesnt matter if its update sd card or original. But the main problem is that each sd card is locked with password which is unique for a each navigation unit. Password calculation algorithm is unknown yet, and its possible to obtain it only by...
Update card from nissan is used instead of original card. And it works even if you don't have original sd. When you receiving update card, you must remove original card and put update card. It updates head unit and works as the main SD. Old SD can be thrown away. TESTED ...
I don't want to quarrel, but sure it does. Have you ever examined what is inside? I assume not.
There is most of the software, that's why navi doesn't work without card. Internal flash of navi unit is too small to hold all necessary software.
It's much faster to do it online at http://nissan.navigation.com/
All you need is info from blue screen (model number and serial number). And of course Confirmation number.
If you need help getting confirmation number, please write me personal message or email auto.emulators at gmail