GPSMAP 64S USB port damaged/corroded how to update, transfer maps etc

[Bobd]

My GPSMAP 64S USB port is corrided so cannot connect to PC. I can connect via bluetooth and Garmin Connect to my mobile phone although this seems more suited to a smart watch etc. Any ideas
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[Nuvi-Nebie]

It is possible to remove the microSD card from the GPSMAP64 and place it in a card reader connected to a computer / laptop, you can write files containg maps, Tracks, Routes, Waypoints etc. to the microSD card and then replace the microSD card back in the GPSMAP64

You will need a program on your computer to handle the maps, Tracks, Routes, Waypoints etc, Garmin Bascamp can do this