[Garmin Firmware ChangeLog]: What's New in 31.20 Beta | Edge MTB

Overview

Garmin has posted Public Beta 31.20 - Pre Rollout for the Edge MTB. The changelog is almost entirely about reliability. Garmin is not advertising new MTB features here. Instead, it is fixing crashes, UI lag from Connect IQ data fields, and a few display issues in weather and elevation screens.

For Edge MTB users, that makes 31.20 a classic stabilization beta. It is the kind of update that matters more in daily trail use than a flashy feature drop.

Update Details

Device: Garmin Edge MTB
Software Version: 31.20 Beta
Channel: Public Beta Program
Rollout Status: Pre-Rollout
Installation Path: Main Menu > System > About > Check For Updates
Source: Garmin Forums

Garmin Edge MTB Beta 31.20 Changelog

Garmin lists these fixes in version 31.20:

Fixed a crash using RTS to edit data screens
Fixed a crash on the course list
Fixed step goal being changed unexpectedly
Fixed Connect IQ data fields causing UI lag or freezing
Fixed the options menu while the start/stop/pause overlay is present
Fixed elevation profile manual scale adjustments
Fixed dew point and UV-index values in the weather widget

That is a solid maintenance package. It targets stability during ride setup, navigation, and widget usage rather than adding visible MTB-specific tools.

Why 31.20 Matters on Edge MTB

Crash Fixes Matter More on Trail Devices

When Garmin fixes crashes in:

RTS data screen editing
course list access

it is addressing failures in places riders touch before and during real rides. On an MTB-focused device, stability during route handling matters more than almost anything else.

Connect IQ Lag Can Undermine the Whole Experience

If Connect IQ data fields were causing the UI to lag or freeze, the issue would not stay isolated to one widget. It would make the whole computer feel unreliable. Garmin is explicitly targeting that in 31.20.

Elevation and Weather Fixes Improve Trust

Garmin also fixed:

manual scaling in the elevation profile
dew point in the weather widget
UV-index in the weather widget
options menu behavior while the start/stop/pause overlay is active

Those are not major feature upgrades, but they do improve the practical feel of the device during real trail riding.

Earlier 31.xx Branch Changes

Garmin also repeats the recent branch history:

31.18 fixed a translation issue that caused "Day" to appear in date strings
31.15 added gear tracking improvements and fixed radar color mode support, false climb credit on flat roads, auto zoom while following a course, Strava widget freezing, ClimbPro display issues, shifter summaries, course navigation crashes, and recent finds search crashes

So 31.20 is another stability step in a branch that is still being tightened before broader release.

How to Install Edge MTB 31.20 Beta

To install this beta, Garmin says you need:

Enrollment in the Public Beta Program
A configured Wi-Fi network on the device
To open Main Menu > System > About > Check For Updates

After downloading, you may still need to manually choose Software Update 31.20 to begin installation.

If the device shows "Collecting diagnostics...", Garmin says to go to:

Menu > System > Diagnostics > Upload RAM Dump

Conclusion

Garmin Edge MTB software version 31.20 Beta is a stability-first beta update. It is mainly about crashes, Connect IQ responsiveness, and cleaner on-device data presentation.

For beta users who depend on Edge MTB for navigation and trail metrics, this looks like a worthwhile update because it focuses on practical ride reliability instead of superficial feature additions.