The SD card slot on my Garmin Nuvi 2689 no longer engages the sd card. It won't click in no matter how far in I push it. I have tried different cards and have successfully installed the cards in different devices. Is there some way for me to install the update from my computer using Garmin Mapinstall?. Mapinstall, sees the Nuvi 2689 and the updated maps that I have downloaded to the computer using Garmin Express. I just don't have a funtioning SD card slot.