nRF Connect SDK v3.2.1 Release Notes

nRF Connect SDK delivers reference software and supporting libraries for developing low-power wireless applications with Nordic Semiconductor products in the nRF52, nRF53, nRF54, nRF70, and nRF91 Series. The SDK includes open source projects (TF-M, MCUboot, OpenThread, Matter, and the Zephyr RTOS), which are continuously integrated and redistributed with the SDK.

Release notes might refer to “experimental” support for features, which indicates that the feature is incomplete in functionality or verification, and can be expected to change in future releases. To learn more, see Software maturity levels.

Highlights

This patch release adds the following changes on top of the nRF Connect SDK v3.2.0:

  • nRF54L Series:

    • Added experimental support for nRF54LM20A Engineering B.

Release tag

The release tag for the nRF Connect SDK manifest repository (https://github.com/nrfconnect/sdk-nrf) is v3.2.1. Check the west.yml file for the corresponding tags in the project repositories.

To use this release, check out the tag in the manifest repository and run west update. See Install the nRF Connect SDK code and toolchain and Updating the repositories for more information.

For information on the included repositories and revisions, see Repositories and revisions for v3.2.1.

IDE and tool support

nRF Connect extension for Visual Studio Code is the recommended IDE for nRF Connect SDK v3.2.1. See the Installation section for more information about supported operating systems and toolchain.

Supported modem firmware

See the following documentation for an overview of which modem firmware versions have been tested with this version of the nRF Connect SDK:

Use the latest version of the Programmer app of nRF Connect for Desktop to update the modem firmware. See Programming nRF91 Series DK firmware for instructions.

Known issues

Known issues are only tracked for the latest official release. See known issues for nRF Connect SDK v3.2.1 for the list of issues valid for the latest release.

Changelog

The following sections provide detailed lists of changes by component.

Bootloaders and DFU

  • Fixed:

    • An issue where the firmware loader image can be erased using the SMP erase slot command issued in the firmware loader application in a single slot DFU (NCSDK-36692).

    • An issue where the firmware loader image is not listed in the SMP image list command in a single slot DFU (NCSDK-36779).

    • An issue where the build system falsely reports key hash contains 0xffff (NCSDK-36718).

Developing with nRF54H Series

Zephyr

The Zephyr fork in nRF Connect SDK (sdk-zephyr) contains all commits from the upstream Zephyr repository up to and including 911b3da1394dc6846c706868b1d407495701926f.

For a complete list of nRF Connect SDK specific commits and cherry-picked commits since v3.2.0, run the following command:

git log --oneline manifest-rev ^ncs-v3.2.0

Documentation