hello, iv got a garmin 420s and im trying to load up the g2 vision map for st.lawrence river, I purchased a new boat and must take it 100 miles up river so this would really help....... I attached some pictures just so someone could verify iv done things correctly, the problem I am having is when I put the card in my gps nothing happens! I thought I did things correctly, I downloaded the files ran them through an unlocking program, created a file called Garmin on an sd card (sdhc actually if that matters) then copyed the file in the folder on the card!!!! any information or thoughts would be very appreciated! iv gotta bring this boat up river soon so id like to have this working! thanks, Mike! [Only registered and activated users can see links. ][Only registered and activated users can see links. ][Only registered and activated users can see links. ][Only registered and activated users can see links. ]