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How to Update GPS on Your Garmin Forerunner 245: A Complete Guide

The Garmin Forerunner 245 is a reliable and feature-packed running watch built for athletes who value precision, performance, and durability. With accurate GPS tracking, heart rate monitoring, and advanced training features, it’s a favorite among runners worldwide. To keep your Forerunner 245 performing at its best, regularly updating its GPS firmware is essential.

Garmin frequently releases GPS and system updates to improve signal accuracy, fix known bugs, and optimize overall performance. Keeping your watch up to date ensures your location tracking remains accurate, your pace data is consistent, and your workouts are recorded correctly. In this guide, we’ll cover why GPS updates are important and how you can easily perform them using either Garmin Express or Garmin Connect Mobile.

Why You Should Update the GPS on Your Forerunner 245

Your Garmin Forerunner 245 uses satellite systems like GPS, GLONASS, and Galileo to track your runs and outdoor activities. These systems rely on constant communication between your watch and orbiting satellites. Garmin periodically refines how your watch interprets these signals, releasing updates that improve accuracy and performance.

Here’s why keeping your Forerunner 245’s GPS updated is important:

  • Improved Accuracy: Updated GPS firmware ensures more precise distance and pace tracking.

  • Faster Satellite Connection: Updates can shorten the time it takes your watch to acquire a GPS signal before your workout.

  • Better Battery Efficiency: Optimized GPS code reduces energy use, helping your watch last longer during long runs.

  • Bug Fixes and Stability: Updates often correct minor tracking errors or route inconsistencies.

  • Enhanced GNSS Performance: Some updates improve compatibility with additional satellite systems, enhancing overall accuracy.

Keeping your GPS updated ensures your Forerunner 245 delivers reliable performance every time you lace up your running shoes.

Preparation Before Updating

Before you begin the update process, make sure both your device and your setup are ready.

  1. Charge Your Watch:
    Ensure your Forerunner 245 has at least 50% battery, or fully charge it to avoid interruptions.

  2. Stable Internet Connection:
    You’ll need an active internet connection to download updates, whether using a computer or smartphone.

  3. Install Garmin Software:
    Garmin provides two official tools for updates: Garmin Express for computers and Garmin Connect Mobile for smartphones.

  4. Sync Your Data:
    Sync your watch with Garmin Connect to back up recent activities before updating.

Method 1: Update GPS Using Garmin Express

Garmin Express is Garmin’s official desktop application for managing device updates, data synchronization, and map downloads. It’s one of the most reliable ways to update your Forerunner 245.

  1. Install Garmin Express:
    Download and install Garmin Express on your Windows or Mac computer.

  2. Connect Your Watch:
    Use the charging cable to connect your Forerunner 245 to your computer. Garmin Express should automatically recognize it.

  3. Add the Device:
    If you’re connecting the watch for the first time, follow the on-screen instructions to add and register it.

  4. Check for Updates:
    Garmin Express will automatically scan for available updates, including software and GPS firmware.

  5. Install the Update:
    Click Install All or select the GPS update specifically if shown. The process typically takes a few minutes.

  6. Restart Your Watch:
    Once the update is installed, safely disconnect your device and restart it. The watch will finalize the GPS firmware update automatically.

Method 2: Update GPS Using Garmin Connect Mobile

If you prefer to update your Forerunner 245 wirelessly, you can use the Garmin Connect Mobile app on your smartphone.

  1. Open Garmin Connect Mobile:
    Ensure Bluetooth is enabled and your watch is paired with the app.

  2. Sync Your Watch:
    Pull down on the main app screen to start a manual sync. This allows the app to check for any available updates.

  3. Check for Updates:
    If a GPS or system update is available, you’ll receive an update prompt within the app.

  4. Install the Update:
    Follow the on-screen instructions to transfer the update from your phone to your watch via Bluetooth.

  5. Wait for the Process to Complete:
    Keep your watch and phone close together. The update may take up to 20 minutes depending on file size.

  6. Restart Your Watch:
    Once the update is complete, your Forerunner 245 will automatically restart to apply the new GPS firmware.

How to Verify the GPS Update

After completing the update, you can check to make sure your Forerunner 245 has successfully installed the latest GPS firmware.

  1. Hold the Up/Menu button.

  2. Scroll to System → About.

  3. Look for the GPS Version displayed on the screen.

You can compare this version number with the latest listed on Garmin’s support page to confirm your watch is fully updated.

Troubleshooting Common Issues

If something goes wrong during the update process, here are a few easy fixes:

  • Update Doesn’t Start:
    Restart your watch and your computer or phone, then try again. If you were using the mobile app, try Garmin Express instead.

  • Update Stalls or Fails:
    Disconnect and reconnect your watch, then restart it. Use Garmin Express to reattempt the update.

  • No GPS Signal After Update:
    Restart your device and step outside in an open area to reacquire satellites. The initial signal lock after an update may take several minutes.

  • Bluetooth Update Too Slow:
    If the update seems to take too long via Bluetooth, switch to Garmin Express for a faster, wired connection.

Tips for Better GPS Accuracy

Even after updating, your GPS accuracy can depend on how you use your watch. Follow these best practices for the most reliable results:

  • Start your activity outdoors, away from tall buildings or trees.

  • Wait for your watch to acquire a full satellite lock before pressing Start.

  • Use GPS + GLONASS or GPS + Galileo mode for better accuracy in difficult environments.

  • Sync your watch regularly to keep satellite data current.

  • Keep your firmware and GPS version updated to the latest release.

Final Thoughts

Updating the GPS on your Garmin Forerunner 245 is a quick and straightforward way to ensure your watch continues delivering accurate, reliable tracking. Whether you use Garmin Express on your computer or Garmin Connect Mobile on your smartphone, the process only takes a few minutes and greatly enhances performance.

Each update brings improved signal accuracy, faster satellite acquisition, and smoother GPS operation—keeping your training data precise and trustworthy. By regularly updating your Forerunner 245, you’ll make sure it remains a dependable companion for every run, walk, or ride, capturing your performance with Garmin’s trademark precision.

Last modified: 2025-11-05Powered by