nRF Connect SDK v2.9.2 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 changes on top of the nRF Connect SDK v2.9.0 and nRF Connect SDK v2.9.1. The changes affect Matter, Zigbee, Bluetooth® Mesh, and nrfx.

nRF Connect SDK v2.9.2 has support for the nRF54L15, nRF54L10, and nRF54L05 devices.
The nrfutil-device and SEGGER J-Link versions are updated to v2.8.8 and v9.24a, respectively, for this release.

Release tag 

The release tag for the nRF Connect SDK manifest repository (https://github.com/nrfconnect/sdk-nrf) is v2.9.2. 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 v2.9.2.

IDE and tool support 

nRF Connect extension for Visual Studio Code is the recommended IDE for nRF Connect SDK v2.9.2. See the Installation section for more information about supported operating systems and toolchain.

Supported modem firmware 

See Modem firmware compatibility matrix 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 nRF Programmer app of nRF Connect for Desktop to update the modem firmware. See the Programming nRF91 Series DK firmware page for instructions.

Known issues 

Known issues are only tracked for the latest official release. See known issues for nRF Connect SDK v2.9.2 for the list of issues valid for the latest release.

Changelog 

The following sections provide detailed lists of changes by component.

Build and configuration system 

Use the nrfutil-device v2.8.8 and SEGGER J-Link v9.24a for the nRF Connect SDK v2.9.2 release.

Protocols 

This section provides detailed lists of changes by protocol.

Matter

Added:
- Automatic Wi-Fi® reconnection after RPU recovery.
- Fixes for CVE-2024-56318 and CVE-2024-56319.
Fixed:
- Problems with certification tests TC-DGGEN-2.1, TC-IDM-10.5, and TC-ACE-2.2.
- Door lock issues related to credentials persistency and factory reset.

Matter fork

Added a new kFactoryReset event that is posted during factory reset. The application can register a handler and perform additional cleanup.

Zigbee

Fixed:
- Compilation errors that previously occurred when the CONFIG_ZIGBEE_FACTORY_RESET Kconfig option was disabled.
- The zb_add_ota_header.py script to allow a patch version higher than 9 in an APPLICATION_VERSION_STRING.

Applications 

This section provides detailed lists of changes by application.

Thingy:53: Zigbee weather station

Added:
- A fix for logging negative temperature values.
- Logging unification.

Samples 

This section provides detailed lists of changes by sample.

Cellular samples

Decreased the fragment size on the following cellular samples that include the LwM2M carrier library:
- Serial LTE modem
- Cellular: HTTP application update
- Cellular: LwM2M carrier
- Cellular: Modem Shell
This is done to ensure that FOTA issued from Verizon LwM2M servers has enough room for HTTP headers.

Libraries 

This section provides detailed lists of changes by library.

Bluetooth libraries and services

Bluetooth Mesh libraries library:
- Fixed an issue where the bt_mesh_adv_unref() function could assert when messaging to a proxy node.

Libraries for networking

nRF Cloud device provisioning library:
- Fixed an issue where the results from the zsock_getaddrinfo() function were not freed when the CoAP protocol was used for connection establishment.

nrfx 

Updated MDK to v8.68.2 to improve errata handling for nRF54L05 and nRF54L10 devices.

Zephyr 

The Zephyr fork in nRF Connect SDK (sdk-zephyr) contains all commits from the upstream Zephyr repository up to and including beb733919d8d64a778a11bd5e7d5cbe5ae27b8ee.

For a complete list of nRF Connect SDK specific commits and cherry-picked commits since v2.9.0, run the following command:

git log --oneline manifest-rev ^v3.7.99-ncs2

Modem-related libraries and versions
Library name	Version information
Modem library	Changelog
LwM2M carrier library	Changelog