I did receive an answer back from Garmin.


"Thank you for contacting Garmin International.

Unfortunately; there were some negative issues recently caused by third party mapping. To my knowledge, it was not the TrakMaps causing the issues but our engineers have blocked most third party map products from our marine devices. I apologize for any inconvenience this may cause. "


So I guess this is something to consider now when purchasing a Garmin product, they can just stop supporting third party maps when they feel like it. Beware if your buying a third party map.

unless someone finds a way to trick the unit somehow