SiliconLabsSoftware · silabs-vm · Jul 29, 2026 · Jul 27, 2026 · Jul 27, 2026 · Jul 29, 2026
@@ -4,37 +4,39 @@ This page provides links to pre-built software image "artifacts" that can be use
 
 Images for the items listed below are available under the "Assets" section at the bottom of this page:
 
-https://github.com/SiliconLabs/matter_extension/releases/tag/v2.9.0
+https://github.com/SiliconLabs/matter_extension/releases/tag/v2.9.1
 
 ## Matter Hub Raspberry Pi Image
 
 The Matter Hub image is intended to be flashed onto an SD card for a Raspberry Pi. The Matter Hub image provides both an Open Thread Border Router and the Matter chip-tool. Note the image is ~7GB in size so depending on your internet connection this download may take some time. Start the Matter Hub Raspberry Pi image download here:
 
 https://www.silabs.com/documents/public/software/SilabsMatterPi_2.9.0-1.6-extension.zip
 
+> **Note:** This release uses the same MatterHub image as the 2.9.0 release.
+
 ## Radio Co-Processor (RCP) Images
 
 The Radio Co-Processor firmware is used to turn an EFR into an RCP that can be used with a Raspberry Pi to allow the Raspberry Pi's Open Thread Border Router to access the Thread network. Radio Co-Processor (RCP) images are available in the Assets section of this page:
 
-https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/ot-rcp-binaries-2.9.0-1.6.zip
+https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/ot-rcp-binaries-2.9.1-1.6.zip
 
 ## Matter Accessory Device Images
 
 The Matter Accessory Device Images are used to turn an EFR into a Matter device. These are pre-built binary images for the Matter Demo. Matter Accessory Device Images are located in the Assets section of this page:
 
-https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/matter-accessory-device-images_2.9.0-1.6.zip
+https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/matter-accessory-device-images_2.9.1-1.6.zip
 
 ## Matter Bootloader Binaries
 
 All Silicon Labs board supporting Matter require that a bootloader binary is flashed to the device along with the application image. Bootloader binaries for all of the Matter supported devices are available here:
 
-https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/bootloader_binaries_matter_extension_v2.9.0-1.6.zip
+https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/bootloader_binaries_matter_extension_v2.9.1-1.6.zip
 
 ## SiWx917 Firmware for SiWN917 NCP and SiWG917 SOC
 
 The SiWx917 firmware(SiWx917_firmware_files.zip) is used to update the SiWN917 NCP and SiWG917 SOC which can be found in the Assets section of this page:
 
-https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/SiWx917_firmware_files_2.9.0-1.6.zip
+https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/SiWx917_firmware_files_2.9.1-1.6.zip
 
 **Note**:
 
@@ -52,12 +54,12 @@ https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/SiWx917
 
 The SiWx917 RCP folder (siwx917_rcp_files.zip) contains the Matter Linux all-cluster-app, which can be run on a Raspberry Pi, and the wfx-sdio-overlay.dts file, a Device Tree Source file used to configure the SDIO interface on the Raspberry Pi to detect and communicate with the SiWx917 RCP.
 
-https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/siwx917_rcp_files.zip
+https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/siwx917_rcp_files.zip
 
 ## SiWx917 SoC Configuration Files For JLink RTT Logging
 
 To check device logs on JLink RTT for the Matter Application on the SiWx917 SoC, the **JLink RTT** must be configured for the SiWx917 SoC device by following the instructions on the [JLink RTT SOC Support](/matter/{build-docspace-version}/matter-wifi-enabling-features/jlink-soc-setup) for SiWx917 SoC.
 
-The [JLinkDevices.xml](https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/JLinkDevices.xml.zip) and [RS9117_SF_4MB_42bsp.elf](https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.0/RS9117_SF_4MB_42bsp.elf.zip) files referenced in the instructions may be found in the Assets section of this page.
+The [JLinkDevices.xml](https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/JLinkDevices.xml.zip) and [RS9117_SF_4MB_42bsp.elf](https://github.com/SiliconLabs/matter_extension/releases/download/v2.9.1/RS9117_SF_4MB_42bsp.elf.zip) files referenced in the instructions may be found in the Assets section of this page.
 
 >**Note**: For EFR32MG2x devices, JLink RTT Logging support is already enabled.
@@ -25,7 +25,7 @@ To customize app behavior, override any Silicon Labs implemented API in `Custome
 
 ### DataModelCallbacks and CustomerAppTask
 
-What used to live in `DataModelCallbacks.cpp` before Matter Extension 2.9.0 now lives in `AppTask.cpp`. The
+What used to live in `DataModelCallbacks.cpp` before Matter Extension 2.9.1 now lives in `AppTask.cpp`. The
 Matter SDK's `MatterPostAttributeChangeCallback` is implemented in
 `examples/platform/silabs/BaseApplication.cpp` and forwards to
 `AppTask::DMPostAttributeChangeCallback` (defined in `AppTask.cpp`), which you
@@ -255,7 +255,7 @@ In order to use a custom cluster in an application, follow these steps:
       "value": "true"
     }   
  ```
-For an example, see [Sample ZAP file](https://github.com/SiliconLabsSoftware/matter_extension/blob/v2.9.0/slc/apps/performance_test_app/thread/performance-test-app.zap)
+For an example, see [Sample ZAP file](https://github.com/SiliconLabsSoftware/matter_extension/blob/v2.9.1/slc/apps/performance_test_app/thread/performance-test-app.zap)
 - Install the **Custom ZAP generation** component under **Silicon Labs Matter -> Stack** in the project's Component Editor. 
 
 
@@ -205,5 +205,5 @@ In order to use a custom cluster in an application, follow these steps:
       "value": "true"
     }   
  ```
-For an example, see [Sample ZAP file](https://github.com/SiliconLabsSoftware/matter_extension/blob/v2.9.0/slc/apps/performance_test_app/thread/performance-test-app.zap)
+For an example, see [Sample ZAP file](https://github.com/SiliconLabsSoftware/matter_extension/blob/v2.9.1/slc/apps/performance_test_app/thread/performance-test-app.zap)
 - Install the **Custom ZAP generation** component under **Silicon Labs Matter -> Stack** in the project's Component Editor.
@@ -74,4 +74,5 @@ Update digits based on the following criteria:
 |  v2.7.0-1.4  |  25-Sep-25     | 2025.6.2                       | v3.5.2   | 1.4 | Maintained |
 |  v2.8.0-1.5  |  12-Jan-25     | 2025.12.0                      | v4.0.0   | 1.5 | Maintained |
 |  v2.8.1-1.5  |  23-Mar-25     | 2025.12.2                      | v4.0.1   | 1.5 | Maintained |
-|  v2.9.0-1.6  |  24-Jun-26     | 2026.6.0                       | v4.1.0   | 1.6 | Active     |
+|  v2.9.0-1.6  |  24-Jun-26     | 2026.6.0                       | v4.1.0   | 1.6 | Maintained |
+|  v2.9.1-1.6  |  30-Jul-26     | 2026.6.1                       | v4.1.1   | 1.6 | Active     |
@@ -8,7 +8,7 @@ To get started with Matter over Wi-Fi, download the latest version of Simplicity
 
 ## Setting up the Matter over Wi-Fi Development Environment
 
-Refer to the [Release Notes](https://github.com/SiliconLabs/matter_extension/releases/tag/v2.9.0) to know more about the latest releases from Silicon Labs.
+For more information about the latest Silicon Labs releases, see the [Release Notes](https://github.com/SiliconLabs/matter_extension/releases/tag/v2.9.1).
 
 To control the Matter Accessory Device, a controller is required which is termed as **chip-tool**. The chip-tool can be set up in two ways:
 

@@ -1,5 +1,8 @@
 # New Features
 
+## New Features for v2.9.1-1.6
+- LLVM compiler support for Matter projects.
+
 ## New Features for v2.9.0-1.6
 - Quality-tested Matter 1.6 solution for Thread MG24 / MG26 / MG30, Wi-Fi SiWG917 SoC and SiWN917 NCP mode.
 - Matter + AWS dual-stack support for 917 NCP boards.

@@ -4,7 +4,7 @@ This Quick-Start Guide will demo the out-of-box experience for adding an SiWx917
 
 ## Software Requirements
 
-- Simplicity Studio v6 with SiSDK - 2026.6.0 + Silicon Labs Matter - 2.9.0 + WiSeConnect - 4.1.0
+- Simplicity Studio v6 with SiSDK - 2026.6.1 + Silicon Labs Matter - 2.9.1 + WiSeConnect - 4.1.1
 - Simplicity Connect mobile App on Smartphone
 
 ## Hardware Requirements

@@ -6,7 +6,7 @@ This demo uses the **Matter Thread - SoC Lighting FreeRTOS** example application
 
 ## Software Requirements
 
-- Simplicity Studio v6 with SiSDK - 2026.6.0 + Silicon Labs Matter - 2.9.0
+- Simplicity Studio v6 with SiSDK - 2026.6.1 + Silicon Labs Matter - 2.9.1
 - Simplicity Connect mobile App on Smartphone
 
 ## Hardware Requirements

@@ -48,7 +48,7 @@ Want to get a Matter application up and running quickly? Here's a high-level ove
 
 ## Other Resources
 
-**To see release notes** containing a list of features and known issues, go to [Matter Release Notes on Silicon Labs Matter Extension](https://github.com/SiliconLabs/matter_extension/releases/tag/v2.9.0).
+**To see release notes** containing a list of features and known issues, go to [Matter Release Notes on Silicon Labs Matter Extension](https://github.com/SiliconLabs/matter_extension/releases/tag/v2.9.1).
 
 **If you are new to Matter** or would like more information about Silicon Labs Matter-based products, see the [Matter content on silabs.com](https://www.silabs.com/wireless/matter).
 

@@ -1,6 +1,6 @@
 # Introduction
 
-This section covers application development topics. Silicon Labs will build out this section over time. For Matter v2.9.0, we provide:
+This section covers application development topics. Silicon Labs will build out this section over time. For Matter v2.9.1, we provide:
 
 - [Matter Scenes Quick Start Guide](./matter-scenes-quick-start-guide)
 - [Matter Event and Timer Guide](./matter-event-timer-guide.md)

@@ -37,7 +37,7 @@ The following hands-on tutorial walks through the process of storing and recalli
 
 ### Requirements
 
-- Simplicity SDK 2026.6.0 + Matter extension 2.9.0 (or newer)
+- Simplicity SDK 2026.6.1 + Matter extension 2.9.1 (or newer)
 - Raspberry Pi 4 + MatterHub Image
 - 1x Silabs WTSK EFR32xG21 (BRD4108B) in RCP configuration
 - 2x [EFR32xG24-DK2601B Dev Kit](https://www.silabs.com/development-tools/wireless/efr32xg24-dev-kit?tab=overview)

@@ -11,7 +11,7 @@ For the standard Matter + AWS build (917 SoC or standard 917 NCP with host LwIP
 ## Prerequisites
 
 - A **917 NCP** Matter project or the reference example `matter_wifi_917_ncp_lock_app_dual_stack_freertos`.
-- Matter Extension **2.9.0** or later, and WiseConnect SDK **4.1.0** or later installed in Simplicity Studio.
+- Matter Extension **2.9.1** or later, and WiseConnect SDK **4.1.1** or later installed in Simplicity Studio.
 - AWS cloud configured according to [AWS installation](./aws-configuration-registration.md).
 - Hardware and software requirements are met as described in [Matter + AWS Prerequisites](./index.md#prerequisites).
 

@@ -73,8 +73,8 @@ Standard Matter + AWS on 917 SoC and standard 917 NCP boards is documented separ
 
 ### Software
 
-- Matter Extension **2.9.0** or later
-- WiseConnect SDK **4.1.0** or later
+- Matter Extension **2.9.1** or later
+- WiseConnect SDK **4.1.1** or later
 - Correct SiWx917 NCP connectivity firmware supporting dual network stack mode
 
 ## Reference Example