Ya I did retrofit it my model is a version H with Hw - 64 and Sw- 4020 also I think my maps is 7690 .I Think when buying these units you are been told that they are new but there is no real way of telling if they came from the factory with that Fw-Sw version or if they have been updated to them versions which might be why people have the same unit versions but some have speed cams and some with out they don't all be the same