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[Garmin Firmware ChangeLog]: What's New in 16.40 | Venu X1

garminchangelogfirmware-updatevenu-x1

Overview

Garmin has started rolling out Software Version 16.40 for the Venu X1. As of April 9, 2026, the release is at 50% rollout, so not every device will see it immediately.

This is a small stable update rather than a major feature release. Garmin's published notes list a single targeted fix between version 16.37 and 16.40.

Update Details

  • Device: Garmin Venu X1
  • Software Version: 16.40
  • Channel: Stable
  • Rollout Status: 50% Release
  • Previous Version: 16.37
  • Delivery: Garmin Connect Mobile or Garmin Express
  • Manual Path: Menu > Settings > System > Software Update
  • Source: Garmin Forums

What's New in Version 16.40?

According to Garmin's official changelog, version 16.40 includes one confirmed fix:

  • Fixes an issue that could cause the serial number to be missing from the About page

That means 16.40 is best understood as a maintenance release focused on device information accuracy, not a broader feature or UI update.

Why This Fix Matters

On paper this looks minor, but the serial number is still an important device detail. If it does not appear correctly in the About page, it can create friction for:

  • support and warranty verification
  • troubleshooting with Garmin support
  • device identification when managing multiple Garmin products
  • confirming hardware details after setup or reset

For affected users, this is the kind of small fix that removes unnecessary support friction.

How to Install Version 16.40

Garmin says the update should sync automatically through Garmin Connect Mobile or Garmin Express.

If you want to check manually on the watch:

  1. Open Menu
  2. Go to Settings
  3. Open System
  4. Tap Software Update
  5. Check whether 16.40 is available

Because the rollout is currently at 50%, some users may need to wait for the next rollout wave.

Important Notes

  • Stable Release: This is a public stable update, not a beta build
  • Phased Rollout: Garmin confirms that version 16.40 is only at 50% Release right now
  • Limited Changelog: Garmin's official notes currently list only one fix
  • No Major Feature Additions Announced: There are no published new features tied to 16.40

Conclusion

Venu X1 Software Version 16.40 is a narrow maintenance update, but it addresses a real device information issue by restoring the serial number on the About page when it is missing.

If your watch has not received the update yet, that is consistent with Garmin's current 50% rollout status.