Thread: City Navigator® North America NT 2012.20

I believe that they're trying to "persuade" the users of low end, i.e. unprofitable, GPS receivers to upgrade.

At the moment I am attempting to acquire the 150MB version of the JCV file for testing. On another forum that is discussing the Junction View issue one of the posters believes that the only difference between the 150MB file and the 446MB file is the resolution of the images. I want to test this, since if true it will be a better solution for the 1xxx series users than the 37xx JCV file. The distortion of the various junction view images in the 37xx JCV file when used on a 1xxx unit may well be eliminated with this file.

EDIT: My results are below.

Intersection of Rt. 81 and Rodman Street, Fall River, MA (Coordinates, -71.152273, 41.695415) to High Street, Moncton, NB (-64.793329, 46.095168)


51MB file - 0 Junction Views
152MB file - 11 Junction Views
446MB file - 15 Junction Views


Verdict: The 152MB file is an acceptable alternative to the 446MB file. It has far more Junction Views than the 51MB file, but still has less views than the 446MB file. Image distortion was not eliminated with this file, and thus images were not any sharper than the 446MB file. I cannot test whether the resolution of the images in the JCV file have changed, but I think that to be unlikely. What is more likely is that the 446MB file has two versions of the same image: portrait and landscape. The portrait images were most likely deleted, which would cut the file size by about half, and then some minor junctions were removed.

Comments: I'll have to debate which file I want in my 1300LM on a full-time basis. Currently I have the 446MB file installed since it is the most complete of the files. I have the space to spare on my MicroSD so....

D3192020A.JCV (152.43MB): [Only registered and activated users can see links. ]

Originally Posted by Strephon Alkhalikoi

D3192020A.JCV (152.43MB): [Only registered and activated users can see links. ]

thanks D3192020A.JCV should be for 2xxx series (Full coverage North America)

edit : added in post n2 , it's more visible

I think I'll stick with the 37xx JCV file. I should have plenty of added space with the 4GB MicroSD I put in my 1300LM to last me for quite a while.

I download the firts option

GMAP MapSource:
Locked
Download MapSource Locked - Part 1 ( 400.00 MB )
Download MapSource Locked - Part 2 ( 400.00 MB )
Download MapSource Locked - Part 3 ( 400.00 MB )
Download MapSource Locked - Part 4 ( 389.50 MB )

but i don't know how to unzip that

20CNNNT1220MSL.z01
20CNNNT1220MSL.z02
20CNNNT1220MSL.z03
20CNNNT1220MSL.zip

This is the name of the file when i finish to download and i don't know what is, i rename all to .zip but nothing happend, please help me

Thank you.........