Initially tried to connect a Nuvi50LM to my Macbook Air. Tried two Micro-to-USB-A cords using two different adapters, but GarminExpress never saw it. Hauled out an older Macbook with a
USB-A port, then discovered it needed more room so I ran out and got an SD card and installed. Finally it said, "We've got it from here", but it's only showing a smidge completed for UPdating Maps. I positioned the cursor pointer and it hasn't moved for over an hour. 1) How long do I wait before I give up, and 2) HOW do I "give up", since the manual warns never to disconnect while updating as it might cause permanent damage...!?? Thanks.