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

Updating the firmware on your Garmin GPSMAP 64st is essential for keeping your device running smoothly, improving system stability, enhancing satellite performance, and fixing known bugs. Firmware updates can also occasionally add new features, ensuring your handheld GPS provides the best possible navigation experience during hiking, geocaching, or other outdoor adventures.

This guide explains how to update your GPSMAP 64st firmware quickly, safely, and effectively.

Why Update Garmin GPSMAP 64st Firmware?

Updating your firmware offers several benefits:

Improved System Stability: Reduces glitches and software errors.
Enhanced GPS Accuracy: Optimizes satellite connectivity and positioning.
Bug Fixes: Corrects known device issues.
Better Performance: Faster response and improved battery efficiency.
New Features: Occasionally adds tools or improvements to your GPS.

Keeping firmware up to date ensures your GPSMAP 64st operates reliably in all conditions.

Method 1: Update Firmware Using Garmin Express (Recommended)

The easiest and safest way to update your GPSMAP 64st firmware is through Garmin Express, Garmin’s official software for managing device updates.

Step 1: Download and Install Garmin Express

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

Step 2: Connect Your GPSMAP 64st to the Computer

Turn on your GPSMAP 64st.
Use the original USB cable to connect it to your computer.
Wait for Garmin Express to detect the device.

If this is your first time connecting, click “Add a Device” and follow the prompts to register it.

Step 3: Check for Firmware Updates

Once your device is added, Garmin Express will automatically check for available updates.
If a firmware update is available, it will appear in the update list.

Step 4: Install the Firmware Update

Click “Install” next to the firmware update.
Wait while Garmin Express downloads and installs the update.

⚠️ Do not disconnect your GPSMAP 64st during the update process. Installation may take 10–30 minutes depending on the update size and internet speed.

Step 5: Safely Disconnect the Device

After installation, wait for the confirmation message in Garmin Express.
Safely eject the device from your computer.
Disconnect the USB cable.
Restart your GPSMAP 64st if prompted.

Your firmware is now updated and your GPSMAP 64st is ready for use.

Using a microSD Card for Updates

If your device does not have enough internal storage:

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

This allows large firmware or map updates to be installed without running out of space.

How Often Should You Update Firmware?

For optimal performance:

Check for updates every 3–4 months.
Update before long outdoor trips.
Enable notifications in Garmin Express to receive update alerts.

Keeping firmware current ensures maximum device reliability and compatibility with satellites and accessories.

Common Firmware Update Issues

Device Not Recognized

Try a different USB port or cable.
Restart both your computer and GPSMAP 64st.

Update Fails or Freezes

Restart Garmin Express.
Reconnect the device and retry.
Ensure your internet connection is stable.

Insufficient Storage

Delete unused files or maps.
Use a microSD card for additional space.

Tips for a Smooth Firmware Update

Make sure your device is fully charged or connected to power.
Use a strong and stable internet connection.
Avoid disconnecting the device mid-update.
Back up waypoints, tracks, and routes before updating.
Always use official Garmin software.

Final Thoughts

Updating the Garmin GPSMAP 64st firmware is an important step for maintaining accurate navigation and reliable performance. Using Garmin Express makes the process simple and safe. By keeping your firmware up to date, you ensure your handheld GPS performs at its best, whether you’re hiking, geocaching, or exploring remote trails.

Regular firmware updates help prevent errors, improve satellite tracking, and occasionally introduce new features, keeping your GPSMAP 64st ready for any adventure.