18.02.0 Release Notes

Release Date: Mar 13, 2018

See Licenses to view Legato AF Licensing Information.

The following provides a summary of changes that have been made in the 18.02 Legato AF Release.

Download the source code and get started with building Legato AF.

New Features

The following are the list of new features that have been added into the 18.02 Release:

AirVantage Improvements

Version 18.02.0 introduces further stability updates to the AirVantage Connector and underlaying Platform Adapters. The code changes provide stability to over-the-air downloads and installs, and improves the reliability of downloads and installs resuming after the device has lost power or has been rebooted.

The AirVantage Data API now supports variables and settings being both read and written to by apps.

An avData field can now be a:

  • variable allowing the AirVantage server to read the value, and can be read/written to by an app.
  • setting allowing the AirVantage server to read/write the value, and can be read/written to by an app.
  • command allowing the AirVantage server to invoke a function in the app.

eCall Support for MSD Version 2

eCall now supports MSD version 2 for additional data and describes:

  • The crash severity (Accident Severity Index - ASI15)
  • The diagnostic result
  • The crash information
  • The coordinate system type

Two new functions have been added to the eCall API to support MSD version 2 features:

Modem Radio Control Service

The Modem Radio Control Service now supports jamming detection on GSM networks and new functions have been added to the le_mrc.api to configure monitoring for detection of jamming.

Documentation Improvements

A new Getting Started section has been added that walks users through installing, building and configuring the Legato Application Framework, as well as starting tutorials, sample apps and how to guides. Everything to get started is now in one easy to find location.

Fixed Issues

All development work is tagged in GitHub as "18.02.0". The list of changes and commit messages can be found on GitHub.

This is only the list of fixes for the Application Framework and Platform Services, for the list of changes in the Platform Adapters and AVC Service view the commits under the tag 18.02.0 in the individual repositories on GitHub.

Known Issues

Constraints and Limitations

Dev Machine Linux Version

To develop applications within the Legato Application Framework, a current supported Long Term Support version of Ubuntu Linux is required on your dev machine (or running in a virtual box on Windows). Ubuntu 16.04 is the current recommended version to use on your dev machine.

ECM-USB modem manager issue

Ubuntu 15.10 and newer has Modem Manager version 1.4.12-1ubuntu1 installed by default which conflicts with the ECM-USB driver when connecting a target. Modem manager may cause the Ubuntu Network Manager to crash on your host and/or your target device to become unavailable over USB.


  • NetworkManager crashing when plugging into your device over USB, or
  • The target device becomes inaccessible after 30 seconds.

Recommended Work Around:

Open Issues

The following is the list of known issues that still exist in Legato 18.02.0 and are currently under investigation:

eCall Service

  • During eCall Modem Services transmission the date and time are not updated and do not pick up the rtc value.