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[Firmware ChangeLog]: What's New in 31.31 | Edge 840

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Overview

Garmin has released Software Version 31.31 for the Edge 840 series. The stable update is currently listed at 20% rollout, so it may not appear for every device immediately.

Version 31.31 is a focused reliability release. Garmin lists two fixes: a crash related to corrupted maps and an incident detection issue where the feature did not trigger in some cases.

Update Details

  • Device: Garmin Edge 840
  • Software Version: 31.31
  • Announcement Date: June 23, 2026 (UTC)
  • Channel: Stable release
  • Rollout Status: 20% rollout
  • Update Method: Garmin Express or Garmin Connect Mobile when available
  • Official Announcement: Garmin Forums

What's New in Version 31.31?

Corrupted Map Crash Fix

  • Fixed crash when maps are corrupted.

The Edge 840 is widely used for route guidance, climb planning, and training rides. A crash caused by corrupted maps can interrupt those workflows, so this is a practical stability fix even though the changelog is short.

Incident Detection Trigger Fix

  • Fixed incident detection not triggering in some cases.

Garmin also fixes an incident detection issue in version 31.31. The official note does not provide additional conditions, but it confirms that reliability has been improved for cases where incident detection previously failed to trigger.

Why This Update Matters

Stronger Map Reliability

For Edge 840 owners, the map engine is part of the normal ride experience, not a secondary feature. Whether you are following a planned route or checking the map mid-ride, the device needs to stay stable even when stored map data has a problem.

Software Version 31.31 directly addresses that type of crash.

Useful for Riders Who Enable Incident Detection

If you ride with incident detection enabled, this update is worth installing. The fix does not change how the feature is used, but it should improve behavior in affected triggering scenarios.

How to Get the Update

Garmin says the update can be downloaded through Garmin Express or Garmin Connect Mobile once it is available for your Edge 840.

The rollout is currently at 20%, so availability may arrive in stages.

Should Edge 840 Owners Update?

Yes. Edge 840 owners should install Software Version 31.31 when it appears. The update is stable and fixes two reliability issues tied to maps and incident detection.

Conclusion

Garmin Edge 840 Software Version 31.31 is a compact but worthwhile stable release. It fixes corrupted-map crashes and improves incident detection behavior, making the Edge 840 more dependable for regular riding.