I have had this nuvi2557LMT for some 6 months, have updated it a couple times on my wife's old Windows laptop, but we no longer have that computer.
I have never been able to get my MacBook Pro (bought a year ago) to recognize my unit. I just tried installing the latest version of the Garmin Express software, and it has even downloaded all updates (software and maps), but doesn't see my device.
What do I do?
Thank you.