.img is not locked
The POIs of your link is also posted here (March 2013) [Only registered and activated users can see links. ]
But is a differences: in your bouquet/archive only 1 file is too recent:
April 2013 Camaras_Medellin.gpi 4.460.729 bytes 14/04/2013 versus February 2013 Camaras_Medellin.gpi 4.375.164 18/02/2013
In to archive posted of catymag ,is present also the file GISCO.gpi 40.423 bytes 19/12/2012
You can also make a post there only for POIs in Topic linked ...why not?
..I found both files on the homepage of GISCO and did post it here without too much checking..
UPDATE: Gps Gisco June 2013
Unlock with gimunlock
POIs June 2013
Colombia Calle Por Calle By GISCO V03.14.1
Spoiler: POIs and speedcams