[Garmin Firmware ChangeLog]: What's New in 27.09 | Forerunner 965

Overview

Garmin has started the rollout of Software Version 27.09 for the Forerunner 965 premium multisport smartwatch. This update is currently in a 20% phased rollout, with full availability expected within the next 1-2 weeks.

Update Details

Device: Garmin Forerunner 965
Software Version: 27.09
Rollout Status: 20% Phased Rollout (Early Access Phase)
Expected Full Availability: January 24-31, 2026

What's New in Version 27.09?

Features & Performance

According to early reports and Garmin's development pipeline, version 27.09 likely includes:

Performance optimization for improved GPS accuracy and battery efficiency
Enhanced training metrics refinements
Bug fixes addressing community-reported issues
System stability improvements

Manufacturing Compatibility

Updated device drivers for newly manufactured Forerunner 965 units
Ensures seamless operation across different hardware variants

Installation Instructions

Automatic Installation

Your Forerunner 965 will automatically download and install version 27.09 when:

Connected to Wi-Fi or your smartphone via Bluetooth
Device has sufficient battery (50%+)
Update becomes available for your device

Manual Update Check

To manually check for version 27.09:

Press the Up button to access the menu
Navigate to System
Select Software Update
Choose Check for Updates
If available, follow the prompts to install

About the Forerunner 965

The Forerunner 965 (released 2023) remains Garmin's flagship running and triathlon watch, known for:

1.4-inch AMOLED display with bright, vibrant colors
Built-in mapping for navigation during activities
Elevate Gen 4 heart rate sensor with highly accurate tracking
Multi-sport capabilities supporting 30+ activity modes
Advanced running metrics including VO2 Max, training effect, and more
Battery life: Up to 23 days in smartwatch mode; 31 hours in GPS mode
Premium design with durable construction

Version 27.09 Context

This update arrives as part of Garmin's regular maintenance cycle for the Forerunner 965. The version number (27.xx) indicates this is part of a major firmware branch that has been the standard for this device since its initial release.

Note: Garmin's newer flagship, the Forerunner 970 (released May 2025), uses the 15.xx version line, representing a completely updated firmware architecture with new features like ECG, flashlight, and voice capabilities.

Why Update?

Stability: Ensure your device operates reliably during training and racing
Accuracy: Maintain precise fitness and health metric tracking
Compatibility: Support the latest smartphone updates and Garmin Connect features
Performance: Experience optimized battery life and GPS performance

User Expectations

Based on historical Garmin update patterns, version 27.09 is likely a maintenance-focused release rather than a major feature upgrade. These incremental updates are essential for:

Fixing reported bugs from community forums
Improving system stability
Enhancing performance in specific use cases
Supporting new hardware variants

Timeline for Your Device

Early Access Phase (Currently): 20% of Forerunner 965 devices
Mid Rollout (Next 3-5 days): Expanding to 50%+
Full Release (January 24-31): 100% of compatible devices

The phased approach allows Garmin to monitor for any issues before the full rollout.

How to Prepare

Charge Your Watch: Ensure your Forerunner 965 has 50%+ battery before updating
Backup Data: Sync with Garmin Connect before updating (usually automatic)
Clear Schedule: Install updates when you won't be using the watch for 1-2 hours
Stable Connection: Use reliable Wi-Fi for the best update experience

Conclusion

Version 27.09 for the Forerunner 965 continues Garmin's tradition of regular software maintenance and improvement. For owners of this premium device, staying updated ensures optimal performance and access to the latest features and optimizations.

Have you received the v27.09 update yet? Share your experience with the Forerunner 965 community!