How to Update Garmin GPSMAP 64st: Step-by-Step Update Guide

The Garmin GPSMAP 64st is a rugged and reliable handheld GPS device designed for hiking, geocaching, hunting, and outdoor adventures. To ensure accurate navigation, improved satellite performance, and access to the latest topographic maps, it’s important to keep your GPSMAP 64st updated. Garmin provides firmware (software) updates and map updates that enhance performance and fix known issues.

This guide explains how to update your Garmin GPSMAP 64st quickly and safely.

Why You Should Update Garmin GPSMAP 64st

Regular updates provide several important benefits:

Improved GPS Accuracy: Better satellite reception and positioning.
Updated Topographic Maps: Access current trails, terrain, and road data.
Bug Fixes: Resolve system errors and performance glitches.
Enhanced Stability: Smoother device operation.
New Features: Occasional firmware updates may add improvements.

Keeping your device updated ensures reliable navigation during outdoor trips.

Method 1: Update GPSMAP 64st Using Garmin Express (Recommended)

The easiest and most reliable way to update your GPSMAP 64st is by using Garmin Express, Garmin’s official update software.

Step 1: Download Garmin Express

Visit the official Garmin website.
Download Garmin Express for Windows or Mac.
Install the software by following the on-screen instructions.
Open Garmin Express after installation.

Step 2: Connect Your GPSMAP 64st to the Computer

Turn on your GPSMAP 64st.
Use a USB cable to connect it to your computer.
Wait for the device to be detected by Garmin Express.

If it’s your first time connecting the device, you will need to add it.

Step 3: Add the Device

Click “Add a Device.”
Select your GPSMAP 64st from the list.
Sign in to your Garmin account or create one if prompted.

Garmin Express will automatically check for available updates.

Step 4: Install Available Updates

You may see the following update options:

Firmware (software) updates
Map updates
System improvements

Click “Install All” to update everything at once or choose specific updates.

⚠️ Important: Do not disconnect the device during the update process. The installation may take 20–45 minutes depending on update size and internet speed.

Step 5: Safely Disconnect

After the update is complete:

Wait for the confirmation message.
Safely eject the device from your computer.
Disconnect the USB cable.
Restart your GPSMAP 64st if necessary.

Your device is now updated and ready for use.

Using a microSD Card for Additional Maps

If you need extra storage for map updates:

Insert a compatible microSD card into the GPSMAP 64st.
When prompted in Garmin Express, select the microSD card as the installation location.

This is helpful for larger topographic or additional map files.

How Often Should You Update GPSMAP 64st?

For best performance:

Check for updates every 3–4 months.
Update before major hiking or outdoor trips.
Enable update notifications in Garmin Express.

Regular firmware updates help maintain compatibility with satellite systems and improve overall stability.

Common Update Issues and Solutions

Device Not Recognized

Try a different USB port.
Use the original Garmin USB cable.
Restart both your computer and device.

Not Enough Storage

Delete unused map files.
Insert a microSD card for additional space.

Update Failed

Restart Garmin Express.
Reconnect the device.
Ensure you have a stable internet connection.

Tips for a Smooth Update

Keep the device fully powered during updates.
Avoid interrupting the installation.
Back up waypoints, tracks, and routes before updating.
Use only official Garmin software.
Ensure a strong internet connection.

Final Thoughts

Updating your Garmin GPSMAP 64st is essential for accurate navigation and reliable outdoor performance. Using Garmin Express makes the update process simple and secure. By keeping your firmware and maps current, you ensure the best possible experience on hiking trails, backcountry trips, and outdoor adventures.

Make it a habit to check for updates regularly so your GPSMAP 64st stays ready for every journey.