First you must be sure of using MapID=1395 when unlocking with JM KG. MapSource can have many unlock codes for the same MapID. To ensure that it will work when the map is transferred to the GPS it must be correctly unlocked both for MapID=1395 and either your GPS UnitID or memory card ID (CID). If you transfer multiple map sets from maps like City Navigator and TOPO you must ensure that ALL MAP SETS ARE UNLOCKED. One single incorrectly unlocked map segment in a created gmapsupp.img file blocks the complete file in your GPS.
Regards
/ Ballebar
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