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

While Garmin Express makes updating your GPSMAP 64st easy, you can also update your device manually. Manual updates give you more control over which maps or firmware versions are installed and can be useful if you want to manage storage or troubleshoot automatic updates. This guide explains how to update your Garmin GPSMAP 64st manually.

Why Update Manually?

Manual updates are helpful when:

You have limited internet bandwidth.
You want to install specific maps or older firmware versions.
Garmin Express is not available or is having issues.
You want to use a microSD card for map storage.

Manual updating ensures you can keep your GPSMAP 64st running accurately without relying on automatic tools.

Step 1: Download Garmin Update Files

Go to the Garmin Support website.
Navigate to GPSMAP 64st under handheld GPS devices.
Download the latest firmware or map files you want to install.

⚠️ Make sure to download the correct files for your device model to avoid errors.

Step 2: Connect GPSMAP 64st to Your Computer

Turn on your GPSMAP 64st.
Connect it to your computer using a USB cable.
Your GPSMAP 64st should appear as a removable drive on your computer.

Step 3: Transfer Firmware or Map Files

For Firmware Updates:

Locate the firmware update file you downloaded (usually a .img or .gcd file).
Copy the file to the Garmin folder on your GPSMAP 64st internal memory.
Safely eject the device from your computer.
Restart the GPSMAP 64st. It should automatically detect and install the firmware update.

For Map Updates:

If updating maps manually, the map file will usually be a .img file.
Copy the map file to the Garmin folder on your device or a microSD card if your device supports it.
Safely eject the device and restart it. The GPSMAP 64st should recognize the new maps.

Step 4: Verify the Update

Turn on your GPSMAP 64st.
Go to Setup > System > About to check the firmware version.
For maps, go to Setup > Map > Map Information to verify that the new map is installed.

Tips for Manual Updates

Always back up your important waypoints, tracks, and routes before updating.
Make sure your device has sufficient battery or is connected to power.
Avoid disconnecting the GPSMAP 64st during firmware installation.
Use only official Garmin files downloaded from Garmin’s website.
If using a microSD card, ensure it is properly formatted for Garmin devices.

Common Issues and Solutions

Device Not Recognized

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

Update Not Detected

Ensure the file is copied to the Garmin folder.
Check that the file is compatible with your device.

Not Enough Storage

Delete old maps or files.
Use a microSD card to install additional maps.

Final Thoughts

Updating your Garmin GPSMAP 64st manually is a reliable way to maintain accurate navigation and access the latest maps or firmware. While it requires a few extra steps compared to Garmin Express, it gives you control over exactly what is installed and allows you to manage storage efficiently.

Regular manual updates keep your GPSMAP 64st ready for hiking, geocaching, or any outdoor adventure, ensuring accurate routes and smooth device performance.