Loading the New Software on a Memory Card Using Garmin Express
You can copy the software update to a memory card using a computer with the Garmin Express™ app.
This device supports up to a 32 GB memory card, formatted to FAT32 with speed class 4 or higher. Use of an 8 GB or higher memory card with speed class 10 is recommended. An 8 GB memory card is included with GPSMAP® 7x3/9x3/12x3 models.
Downloading the software update may take from a few minutes up to a few hours.
You should use a blank memory card for software updates. The update process erases the content on the card and reformats the card.
After loading the update onto the memory card, install the software on the chartplotter (Updating the Device Software Using a Memory Card).
Parent Topic: Software Updates