Garmin is back with another beta release — this time rolling out Beta Version 9.21 for the Instinct 3 Series and the Instinct E lineup.
If you’re part of the Garmin Public Beta Program, this update is headed your way automatically over the air (OTA).
Let’s break down what’s new, which models are supported, and what you should know before and after updating.
Beta Version 9.21: Available for These Models
This update applies to the following Instinct 3 and Instinct E Series devices:
- Instinct 3 AMOLED (45mm & 50mm)
- Instinct 3 Solar (45mm & 50mm)
- Instinct E (40mm & 45mm)
Suppose you’re enrolled in Garmin’s Public Beta Program. In that case, your device will receive this update automatically via Bluetooth (GCM) or Garmin Express — no manual downloads are required.
What’s Fixed in Garmin Instinct 3 Beta V9.21
Changelog – Changes Since v9.20:
- Fixed a potential crash during GPS activities
- This fix is crucial for users who rely on their watch during high-performance workouts or wilderness tracking.
After Updating: Software Version Details
Once updated, your device will reflect the following version numbers, which you can verify by going to:
Menu → System → About
- Software Version: 9.21
- GPS Version: 11.01
- BLE/ANT Version: 1.04
- Sensor Hub Version: 34.09
Pro Tip: The software version should match the “Host” version listed on the sixth “About” page of your watch.
Found a Bug? Here’s What to Do
As always with beta software, bugs can sneak in. If you experience any glitches or crashes:
- Head over to the Beta Bug Reports forum to report the issue.
- Consult the Beta Wiki, which includes:
- How to access system files
- What to do after a freeze or crash
- What info to include in your bug report
Want to Backdate Your Software?
If things don’t go smoothly or you simply want to revert, Garmin allows you to backdate your watch to the most recent live version. Just be aware:
- Backdating will reset your watch to default settings.
- Once backdated, you can’t re-download the same beta version.
- You’ll need to wait for the next beta to go live.
Download the appropriate .zip file for your model below. Each includes the necessary files and a “Read Me” with step-by-step instructions.
Final Thoughts – Garmin Instinct E series firmware update
Garmin continues its momentum with regular beta updates for the Instinct 3 lineup. Version 9.21 may be a small patch, but its GPS stability fix is a big win for outdoor athletes and explorers alike. If you’re enrolled in the Beta Program, your watch may already be updated — and if not, it’s just a Bluetooth sync away.
We recommend staying on the beta track only if you’re comfortable with occasional bugs. But for those who love being the first to try new features, 9.21 is well worth it.
Stay Updated: Bookmark our Garmin Beta Updates Hub for changelogs, tips, and real-world feedback from the community.
Also See:-
- Garmin Instinct 3 Solar Review: Features, Price, and First Impressions.
- How to Reset Garmin Instinct 3 Without Losing Data: Easy Guide.
- How to Use Alarms, Timers, and Stopwatch on Garmin Instinct 3: Ultimate Guide.
- Garmin Instinct 3 Watch Faces: Customize, Download & Personalize Like a Pro.
- Garmin Instinct 3 vs Enduro 3: Rugged or Premium—Which Wins?.
- Garmin Instinct 3 vs Instinct 2: 5 Big Reasons to Upgrade.
