Greetings,
I watched the most relevant video I could find on my situation (https://youtu.be/aLuDOq7HESE) and followed the guidance, but Garmin Express is not showing "Use a Memory Card (Recommended)" option when updating nuvi 550.
On the left is what the video says to expect, on the right is what is displayed when I go thru the steps.
Garmin Products owned and operated: GPSMAP 76c, nuvi 550, nuvi 1450, zumo 396, RV 780, G6, Edge 25