I was reading that newer Garmin updates block access to unlocked maps? What is the latest firmware I can use without losing this ability, or is there a way to revise maps using one of the tools listed here to allow me to use them with the most recent firmware?

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jgbyj Reviewed by jgbyj on 14th February 2018. What firmware version can I update a GPSmap 78s to without losing access to unlocked maps? I was reading that newer Garmin updates block access to unlocked maps? What is the latest firmware I can use without losing this ability, or is there a way to revise maps using one of the tools listed here to allow me to use them with the most recent firmware? Rating: 5