I found this site a few days ago while looking for maps for my valor ddn-868W. I found this thread:
http://www.navitotal.com/showthread.php?9094-Valor-ddn-868w-with-gogo-maps-from-engistech
I downloaded the IGO8 core (and extracted via WINRAR) that chas521 posted from his march 2011 thread referenced in the above thread. I edited the sys.txt file with the suggestions that he made for my screen resolution 800X480, and from post #15 in this thread:
http://www.navitotal.com/showthread.php?7708-Help!-Installing-iGO-8.3-Picture-goes-all-white-and-rolls!/page2&highlight=chas521
I am in the US, so I downloaded the Navteq maps via torrent from this thread:
http://www.navitotal.com/showthread.php?12963-US-CANADA-NAVTEQ-2012.Q4-Direct-Download
I extracted all the maps/poi/dem to the proper directories also using WINRAR.
When I load IGO for the first time, it asks the proper questions, and I get it set up and the core loaded. I don't have a GPS signal, and cannot change the country from the "Hungary" default. I also don't think I have voice services, but am unsure since I can't select anything. I do get beeps when making selections though.
Initially, I had the same issues as gsthunder in this thread (regarding the program crash from page 6?), but redownloading the files and extracting them over again seems to have fixed that issue and the program fully loads now.
http://www.navitotal.com/showthread.php?12544-Newbie-Question-For-Loading-IGO8
I'm new to this, my original SD card uses the GOGO maps, so I'm not very familiar with IGO8 and am probably doing something wrong. I just can't figure out what I'm doing wrong. When I use the original program the GPS locks fine and the program works as intended. But the maps are from 2011 and there appears to be no update available. I also cannot find a sys.txt file on the original GOGO SD card, FWIW.
Any help is appreciated.