nuvi 40 and 50 (GCD file) software version 3.40 as of March 7, 2013
Code:http://www8.garmin.com/support/download_details.jsp?id=5297
Code:http://www.garmin.com/software/nuvi40and50_GCDfile__340.gcd
Changes made from version 3.10 to 3.40:
Fixed an error that caused demo mode to work improperly