This Workaround can work.... But I think the problem is with cGPSmapper you are using to create the map..... Free cGPS mapper dosent support routing, POI, City Indexing etc.... Basically it can only make custom IMG. The IMG created has routing information but it is broken(intentionally) by Free cGPSmapper. Try using a commercial one.... I used that to create Asian maps and it works!!!

Good Day