Thanks for the answers to my questions.With lots of reading on this forum I am still not clear on how to load the SD card. The problem is I am in North America and I cant test all the features with Euro map. I loaded the SD card Like this: SD/garmin/ASR = 11 files
/JCV = 1 file
/SID = 4 files
/CNEUNT2013.41gmap3d.img
/CNEUNT2013.41.img
/ CNEUNTgmapdem.img

In Nuvi /.system /SQlite/D3413080A.db

I can see the 3 Euro maps in Nuvi’s myMaps screen,and all 3 maps are working fine. The voice Command is giving the message: This feature is not available for American English. This means the ASR folder is not working. (I think)
JCV and SID I cant test. I don’t know if you can have these folders on .system and SD card simultaneously