Release Notes v1.4.2.0.1
Release highlights
This release provides NXP downstream Matter 1.4.2 support for the following NXP platforms: MCX W71, MCX W72, RW61x (RW612, RW610), i.MX RT1060 + radio co-processors (K32W0 RCP, IW416, IW612, IW610), i.MX RT1170 + IW612.
Supports integration with MCUXpresso SDK 25.09.00 for FreeRTOS configurations for all platforms (except for the K32W0 RCP).
Matter is now a first-class MCUXpresso SDK Middleware component with streamlined CMake build system support for all FreeRTOS configurations. With this update, developers can now create freestanding Matter applications with simplified project setup and dependency management. MCUXpresso SDK entry point to get started with Matter development is now the mcuxsdk-manifests-connectivity-addons repository.
Updated OpenThread baseline to support additional Thread 1.4 Border Router functionality with certification-ready implementation for platforms supporting Border Router configuration.
Introducing concurrent Matter and Bluetooth LE Channel Sounding (CS) as experimental support for precise wireless distance measurement applications on MCX W72 platform (Please contact your NXP representative to access additional Wireless Localization packages).
Introducing concurrent Matter and Aliro as experimental support (Please contact your NXP representative to access additional Aliro packages).
Added EdgeLock SE051H Secure Element integration on RW612 platform.
The release also provides other improvements and maintenance updates.
Version information
The versions for Matter (connectedhomeip), OpenThread, MCUXpresso SDK with FreeRTOS, and Zephyr RTOS that are integrated by this release are summarized below:
Matter: v1.4.2 based on CSA Matter SDK baseline version dee7d7bf629 from branch “v1.4.2-branch” and including cherry-pick from below commit:
https://github.com/project-chip/connectedhomeip/commit/bd7454267ab8826dc284e76fd0b8df55624fe478
https://github.com/project-chip/connectedhomeip/commit/f5fdddf
OpenThread: ot-nxp v1.4.0.4 based on openthread version a9a9d840612
SDK:
MCX W71, MCX W72, RW61x and iMX RT: MCUXpresso SDK v25.09.00 (GitHub based, including FreeRTOS). Additionnaly dedicated Matter patched have been added for particular middleware component (list of patches could be retreived looking at the west.yml ).
RW61x: NXP Zephyr RTOS SDK v4.1.0
Development tools
GUI based for Windows, Mac OS, and Linux via NXP MCUXpresso for Visual Studio (VS) Code Extension with pre-configured examples for FRDM-RW612, FRDM-MCXW72, FRDM-MCXW71, and i.MX RT boards. This Matter 1.4.2 release configuration is supported by NXP MCUXpresso for VS Code Extension v25.11.16 or later based on CMake build configurations. Please update VS Code extension if necessary. For further information on using the NXP Matter codebase with MCUXpresso for VS Code Extension see the following guides and references:
MCUXpresso VS Code Extension Home Page (installation and general information)
MCUXpresso VS Code documentation section for working with Matter
Matter FreeRTOS CLI (command line) - see Install MCUX SDK with Matter support
Matter Zephyr CLI (command line) - see Matter NXP Zephyr Application for build, deployment, and debug command references. Usage of CLI can be used in Linux development environment.
Features and examples supported
FreeRTOS configurations
The release supports configurations for Matter over Wi-Fi, Matter over Thread, Matter over Ethernet, and Matter over Wi-Fi with Thread Border Router. Please refer to the dedicated Matter example repository for a complete list of Matter examples supported on NXP platforms (each example’s README can be checked for more detailed information).
Zephyr configurations
RW61x Matter over Wi-Fi (with Bluetooth LE commissioning)
Main changes compared to previous release (v1.4.0.2.1)
Targeting all NXP platforms supporting Matter on FreeRTOS:
Matter NXP downstream codebase architectural updates:
Matter integrated as first-class MCUXpresso SDK middleware component
Unified CMake build system with West package management (GN deprecated)
Modular repository structure with dedicated examples repository
Freestanding application creation capability with
west export_appEnhanced VS Code integration with Matter-specific configurations
Deprecating the FreeRTOS GN-based application build for NXP MCUs. The recommended approach for developers is to adopt CMake, in alignment with the MCUXpresso SDK build system. Legacy GN builds are maintained in a minimal form only for:
RW61X platform: Thermostat application
MCX W72 platform: Contact sensor application
Added Matter Windows build support improvements
Other notable changes:
Added MCUXpresso SDK v25.09.00 support
Updated OpenThread baseline with Thread 1.4 Border Router certification-ready implementation
Targeting all NXP platforms supporting Matter with Thread Border Router (TBR) device type support on FreeRTOS:
Enhanced NAT64 enablement with improved reliability
SRP (Service Registration Protocol) client functionality
Multicast Listener Discovery v2 (MLDv2) support
Enhanced mDNS service management and discovery
Targeting all NXP platforms supporting Matter over Wi-Fi on FreeRTOS:
Added WPA3-SAE security mode support for modern network compatibility
Enhanced Wi-Fi commissioning reliability with improved error recovery
Fixed conformance test cases for Wi-Fi diagnostics
MCX W72 / W71 FreeRTOS:
Full CMake support
MCX W72 FreeRTOS:
NEW: Introduced concurrent Matter and Bluetooth LE Channel Sounding (CS) as experimental support for precise distance measurement applications on MCX W72 platform light-switch-app-ble-cs.
NEW: Introduced concurrent Matter and Aliro as experimental support on MCX W72 platform lock-app-aliro.
NEW: MCXW72-FRDM board support
RW61x FreeRTOS:
NEW: RW61x internal EdgeLock subsystem (ELS) integration with operational PKI key protection
NEW: Added Matter over Ethernet support with FreeRTOS
NEW: Added EdgeLock SE051H external Secure Element support. Matter over Wi-Fi configuration support for external crypto operation offload and usage of SE051H NFC tag feature to retrieve Matter passcode instead of QR code)
i.MX RT1060 + radio co-processors FreeRTOS:
NEW: Added support for IW610 radio co-processor integration
Memory footprint summary (Release mode)
MCX W71
Matter Example |
Connectivity support |
Build mode |
Application Flash usage |
Application RAM usage |
Factory data section |
NVM (internal flash area) |
OS |
|---|---|---|---|---|---|---|---|
Contact Sensor Low Power w/ OTA requestor |
Matter over Thread MTD with SED |
Release |
658 K |
109 K (inc 36.5 K heap) |
8 K |
32 K |
FreeRTOS |
Lighting app w/ OTA requestor |
Matter over Thread |
Release |
698 K |
116 K (inc 36.5 K heap) |
8 K |
32 K |
FreeRTOS |
Door Lock Low Power w/ OTA requestor |
Matter over Thread MTD with SED |
Release |
726 K |
109 K (inc 36.5 K heap) |
8 K |
32 K |
FreeRTOS |
MCX W72
Matter Example |
Connectivity support |
Build mode |
Application Flash usage |
Application RAM usage |
Factory data section |
NVM (internal flash area) |
OS |
|---|---|---|---|---|---|---|---|
Contact Sensor Low Power with OTA requestor |
Matter over Thread MTD with SED |
Release |
651 K |
123 K (inc 50K heap) |
8 K |
32 K |
FreeRTOS |
Lighting app w/ OTA requestor |
Matter over Thread |
Release |
749 K |
133 K (inc 50K heap) |
8 K |
32 K |
FreeRTOS |
Door Lock Low Power w/ OTA requestor |
Matter over Thread MTD with SED |
Release |
719 K |
123 K (inc 50K heap) |
8 K |
32 K |
FreeRTOS |
Light Switch Bluetooth Channel Sounding Application |
BLE CS + Matter over Thread FTD with OTA requestor |
Release |
939 K |
169 K (inc 50K heap) |
8 K |
32 K |
FreeRTOS |
Door Lock + Aliro |
+ Matter over Thread mtd with OTA requestor |
Release |
1110 K |
237 K (inc 128K heap) |
8 K |
32 K |
FreeRTOS |
RW61X (FRDM)
Matter Example |
Connectivity support |
Build mode |
Application Flash usage |
Application RAM usage |
Factory data section |
NVM |
OS |
|---|---|---|---|---|---|---|---|
Thermostat app with OTA requestor |
Matter over Wi-Fi (with BLE) |
Release |
1321 K |
520 K (inc 126K heap) |
4 K |
64 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Wi-Fi with OTBR (with BLE) |
Release |
1887 K |
837 K (inc 250K heap) K |
4 K |
64 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Thread |
Release |
1213 K |
434 K (inc 126K heap) K |
4 K |
64 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Ethernet |
Release |
757 K |
290 K (inc 126K heap) |
4 K |
64 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Wi-Fi (with BLE) |
Release |
2131 K |
411 K (inc 120K heap) |
4 K |
64 K |
Zephyr |
i.MX RT1060 + radio co-processors
Matter Example |
Connectivity support |
Build mode |
Radio Co-Processor |
Application Flash usage |
Application RAM usage |
Factory data section |
NVM |
OS |
|---|---|---|---|---|---|---|---|---|
Thermostat app |
Matter over Thread |
Release |
K32W0 |
1061 K |
395 K (inc 126K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app |
Matter over Wi-Fi (with BLE) |
Release |
IW416 |
1132 K |
408 K (inc 126K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Wi-Fi (with BLE) |
Release |
IW610 |
1357 K |
422 K (inc 126K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Thread |
Release |
IW610 |
1493 K |
411 K (inc 126K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Thread |
Release |
IW612 |
2013 K |
411 K (inc 126K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Wi-Fi (with BLE) |
Release |
IW612 |
1870 K |
422 K (inc 126K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Wi-Fi with OTBR (with BLE) |
Release |
IW612 |
2349 K |
712 K (inc 250K heap) K |
4 K |
128 K |
FreeRTOS |
i.MX RT1170 + IW612
Matter Example |
Connectivity support |
Build mode |
Application Flash usage |
Application RAM usage |
Factory data section |
NVM |
OS |
|---|---|---|---|---|---|---|---|
Thermostat app with OTA requestor |
Matter over Wi-Fi (with BLE) |
Release |
1887 K |
421 K (inc 126K heap) |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Wi-Fi with OTBR (with BLE) |
Release |
2368 K |
712 K (inc 250K heap) K |
4 K |
128 K |
FreeRTOS |
Thermostat app with OTA requestor |
Matter over Thread |
Release |
2018 K |
412 K (inc 126K heap) |
4 K |
128 K |
FreeRTOS |