Quote Originally Posted by catymag View Post
for nuvi 255:

Changes made from version 7.50 to 7.60:
Added support for a second map on an SD card.
Improved route calculation logic.
Fixed an error that sometimes caused water map features to not appear on the turn list.
Fixed an error that caused the device to find no results when the user changed state or province during address searches (2010 maps only).
Fixed an error that caused the device to not find streets that were spelled with a diacritic ß, instead of ss.


You can have CN in internal memory and both the other maps in sd
Excuse my arrogance and therefore my ignorance, when I said that the package ( All in one... )would be the best solution for the line nuvi 255/255W.
I did what you suggested and it worked perfectly.

Quote Originally Posted by joanim View Post
If you go Garmin site and update the software of your 255, you can use 2 maps on your SD card. Name them gmapsupp.img and gmapsup1.img. Also you can have 2 more maps in internal memory. Name them gmapprom.img and gmapprom1.img.
Perfect!
In my case I backup the original USA map ( gmapprom.img ) and put CN_BR in internal memory, and on SD card over /Garmin folder I put gmapsupp.img and gmapsup1.img with AG3011 and Tracksource 1208. This works fine. No need more one file for this maps.

For those don't have the news versions of Nuvi or the old Garmins, don't worry. I or someone continue to maintain the pack update.