Releases: SiliconLabs/simplicity_sdk
Releases · SiliconLabs/simplicity_sdk
v2025.6.2
Simplicity SDK Version 2025.6.2
Release notes for this release are located at: Simplicity SDK Version 2025.6.2 (September 24, 2025) - Release Notes.
Full Changelog: v2025.6.1...v2025.6.2
v2024.12.3
Simplicity SDK Version 2024.12.3
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 9.1.1.0 | Bluetooth - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Location Services | 9.1.0.0 | - Same as previous release. | Release Notes |
| Bluetooth Mesh SDK | 8.1.0.0 | - Targeted quality improvements and bug fixes. | Release Notes |
| Gecko Platform | 5.1.3.0 | Peripherals - Targeted quality improvements and bug fixes. Services - Targeted quality improvements and bug fixes. CPC - Targeted quality improvements and bug fixes. RAIL - Targeted quality improvements and bug fixes. |
Release Notes |
| OpenThread SDK | 2.6.3.0 | OpenThread - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| RAIL SDK | 2.18.3.0 | RAIL Apps and Library - Underlying platform changes only. |
Release Notes |
| Connect SDK | 4.0.3.0 | Connect Apps and Stack - Underlying platform changes only. |
Release Notes |
| USB Device Stack | 1.4.1.0 | - Same as previous release. | Release Notes |
| Wi-SUN SDK | 2.5.1.0 | Wi-SUN Stack - Targeted quality improvements and bug fixes. Wi-SUN Applications - Targeted quality improvements and bug fixes. |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.23.4.0 | - Z-Wave and Z-Wave Long Range 800 SDK 7.23.4 GA is self-certified according to the 2024B-3 Z-Wave Alliance Cert Program. - Targeted quality improvements and bug fixes. |
Release Notes |
| Zigbee EmberZNet SDK | 8.1.3.0 | Zigbee - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
Full Changelog: v2024.12.2...v2024.12.3
v2025.6.1
Simplicity SDK Version 2025.6.1
Release notes for this release are located at: Simplicity SDK Version 2025.6.1 (July 21, 2025) - Release Notes.
v2025.6.0
Simplicity SDK Version 2025.6.0
Release notes for this release are located at: Simplicity SDK Version 2025.6.0 (June 16, 2025) - Release Notes.
v2024.6.3
Simplicity SDK Version 2024.6.3
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 8.3.0.0 | Bluetooth - Minimal GATT client for ATT MTU exchange only. - Security manager code optimization. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Location Services | 8.3.0.0 | - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Mesh SDK | 7.0.3.0 | - Targeted quality improvements and bug fixes. |
Release Notes |
| Gecko Platform | 5.0.3.0 | - Targeted quality improvements and bug fixes. |
Release Notes |
| OpenThread SDK | 2.5.3.0 | OpenThread - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Proprietary Flex SDK | 3.8.3.0 | RAIL Apps and Library - Targeted quality improvements and bug fixes. Connect Apps and Stack - Underlying platform changes only. |
Release Notes |
| USB Device Stack | 1.3.1.0 | - Same as previous release | Release Notes |
| Wi-SUN SDK | 2.2.1.0 | Wi-SUN Stack - Targeted quality improvements and bug fixes. Wi-SUN Applications - Same as previous release. |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.22.4.0 | - Z-Wave and Z-Wave Long Range 800 SDK 7.22.4 GA is self-certified according to the approved 2024A Specification test suite. - User Credential Command Class implementation is adapted based on the state of the Z-Wave Specification at the time of the 7.22.4 GA release, which may change until the 2024-B1 Z-Wave Specification release. - 7.22.0 GA is officially certified according to the approved 2023B Specification test suite and can be selected on Z-Wave Alliance Certification Portal for End Device product certification. |
Release Notes |
| Zigbee EmberZNet SDK | 8.0.3.0 | Zigbee - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
v2024.12.2
Simplicity SDK Version 2024.12.2
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 9.1.0.0 | Bluetooth - BG22L and BG24L enablement. - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Location Services | 9.1.0.0 | - Underlying platform changes only | Release Notes |
| Bluetooth Mesh SDK | 8.0.2.0 | - Bug fixes and minor enhancements. | Release Notes |
| Gecko Platform | 5.1.2.0 | CMSIS Device - Added support for EFR32BG22L and EFR32BG24L families. CPC - Targeted quality improvements and bug fixes. RAIL 5.1.2 - Targeted quality improvements and bug fixes. |
Release Notes |
| OpenThread SDK | 2.6.2.0 | OpenThread - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| RAIL SDK | 2.18.2.0 | RAIL Apps and Library - Underlying platform changes only. |
Release Notes |
| Connect SDK | 4.0.2.0 | Connect Apps and Stack - Underlying platform changes only. |
Release Notes |
| USB Device Stack | 1.4.1.0 | - Same as previous release. | Release Notes |
| Wi-SUN SDK | 2.5.0.0 | Wi-SUN Stack - Targeted quality improvements and bug fixes. Wi-SUN Applications - Targeted quality improvements and bug fixes. |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.23.2.0 | - Z-Wave and Z-Wave Long Range 800 SDK 7.23.2 GA is self-certified according to the 2024B-1 Z-Wave Alliance Cert Program. - Targeted quality improvements and bug fixes. |
Release Notes |
| Zigbee EmberZNet SDK | 8.1.2.0 | Zigbee - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
v2024.12.1-0
Simplicity SDK Version 2024.12.1
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 9.0.1.0 | Bluetooth - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Location Services | 9.0.1.0 | - Underlying platform changes only | Release Notes |
| Bluetooth Mesh SDK | 8.0.1.0 | - Bug fixes and minor enhancements. | Release Notes |
| Gecko Platform | 5.1.1.0 | CMSIS Device - Added support for xGM260 modules CPC - Fixed a potential security vulnerability. Security - Targeted quality improvements and bug fixes. Boards and External Devices - Added support for BRD2505A, BRD2713A, BRD4120A, BRD4121A, BRD4402C, BRD4403C. RAIL 5.1.1 - Added support for the xGM260P modules. |
Release Notes |
| OpenThread SDK | 2.6.1.0 | OpenThread - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| RAIL SDK | 2.18.1.0 | RAIL Apps and Library - Targeted quality improvements and bug fixes. |
Release Notes |
| Connect SDK | 4.0.1.0 | Connect Apps and Stack - Underlying platform changes only. |
Release Notes |
| USB Device Stack | 1.4.1.0 | - Underlying platform changes only | Release Notes |
| Wi-SUN SDK | 2.4.0.0 | Wi-SUN Stack - Introducted a new API to select a preferred PAN. - Targeted quality improvements and bug fixes. Wi-SUN Applications - Targeted quality improvements and bug fixes. |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.23.1.0 | - Z-Wave and Z-Wave Long Range 800 SDK 7.23.1 GA is self-certified according to the 2024B-1 Z-Wave Alliance Cert Program. - Z-Wave Long Range European frequency has shifted to align the implementation to the specification change. - A firmware upgrade over-the-air issue is fixed. An end device is required to be included again after the OTA process. |
Release Notes |
| Zigbee EmberZNet SDK | 8.1.1.0 | Zigbee - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
v2024.12.0
Simplicity SDK Version 2024.12.0
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 9.0.0.0 | Bluetooth - GA release of Periodic Advertisement BGAPI event - BT LE Connection Subrating - Accept List Based Auto-connect - BT Atlanta (v6.0) LL and Host Qualification - Channel Sounding sparse channel map support - Channel Sounding antenna switching support - CBAP - CPMS integration - Note: Work will continue in 25Q2 to support multi-level certificates and further enhancements Multiprotocol - ZigbeeD and OTBR support on OpenWRT - GA - DMP BLE + CMP ZB & Matter/OT with Concurrent Listening on MG26 for SoC - GA - 802.15.4 Unified radio scheduler priority component - Debian packaging support for MP host applications - Alpha |
Release Notes |
| Bluetooth Location Services | 9.0.0.0 | - Channel Sounding sparse channel map support - Channel Sounding antenna switching support |
Release Notes |
| Bluetooth Mesh SDK | 8.0.0.0 | - Support added for Micrium and FreeRTOS. - Bug fixes and minor enhancements. |
Release Notes |
| Gecko Platform | 5.1.0.0 | CMSIS Device - Added support for new EFR32xG27 OPN, EFR32xG26 OPN's, Module OPN's(MGM260PB22VNA2,MGM260PB32VNA2,MGM260PB32VNN2) CPC - Experimental support of NETLINK-SDIO interface on the SiWx917m platform Security - Mbed TLS upgraded to latest version 3.6.2 Boards and External Devices - Added support for board OPN's BRD2709A, BRD2711A, BRD4350A, BRD4351A, BRD4412A, BRD4413A. RAIL 5.1.0 - Added support for Bluetooth Low Energy (BLE) Channel Sounding (CS) on the EFR32xG24. This feature enables accurate distance measurement between two devices when used with the Silicon Labs BLE stack and distance measurement libraries. - Added support for Concurrent listening feature on the EFR32xG26 part. - Added support for 1 Mbps and 2 Mbps custom 802.15.4 SUN PHYs on the EFR32xG26 part. |
Release Notes |
| OpenThread SDK | 2.6.0.0 | OpenThread - Thread 1.4 certification compliance for Thread devices (SoC) - Thread 1.3 certification compliance, and 1.4 Alpha support for OTBR - OTBR NCP mode support - Alpha - OTBR RCP mode with MCU host (x917) - Alpha - KNX IOT API support (delivered in Silabs GitHub) - xG26 Module support - TrustZone secure key storage support for Thread / MP SoC projects Multiprotocol - ZigbeeD and OTBR support on OpenWRT - GA - DMP BLE + CMP ZB & Matter/OT with Concurrent Listening on MG26 for SoC - GA - 802.15.4 Unified radio scheduler priority component - Debian packaging support for MP host applications - Alpha |
Release Notes |
| RAIL SDK | 2.18.0.0 | RAIL Apps and Library - RAIL Tutorial moved to docs.silabs.com: https://docs.silabs.com/rail/latest/rail-start/rail-training - RAIL SDK supported on BRD4276A radio board with EFR32FG25 and SKY66122-11 frontend module for high TX power applications - Improved RangeTest Sample Application to fully support multi-PHY configurations and added new feature to control measurements on RX side - in alpha quality - Sigfox TX PHYs and RX PHYs supported on EFR32FG23 and EFR32FG28 parts for EU and NA region |
Release Notes |
| Connect SDK | 4.0.0.0 | Connect Apps and Stack - PSA Crypto hardware acceleration for payload encryption enabled in Connect Stack on Series-2 parts - Connect stack and Connect SDK enabled on BRD4276A radio board with EFR32FG25 and SKY66122-11 frontend module for high TX power applications |
Release Notes |
| USB Device Stack | 1.4.0.0 | - Underlying platform changes only | Release Notes |
| Wi-SUN SDK | 2.3.0.0 | Wi-SUN Stack - Direct Connect - PAN Defect Wi-SUN Applications - Border Router CLI source code - Border Router CLI with Wi-Fi Backhaul |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.23.0.0 | - Z-Wave and Z-Wave Long Range 800 SDK 7.23.0 GA is self-certified according to the 2024B-1 Z-Wave Alliance Cert Program. - Z-Wave Long Range European region is officially supported - The Z-Wave stack includes an S2V2 Alpha implementation. - Introduced certifiable User Credential Command Class implementation. - Simplified GPIO handling. |
Release Notes |
| Zigbee EmberZNet SDK | 8.1.0.0 | Zigbee - 250+ entries in APS link key table - ZigbeeD support on Android 12 (v21.0.6113669) and Tizen (v0.1-13.1) - xG26 Module support Multiprotocol - ZigbeeD and OTBR support on OpenWRT - GA - DMP BLE + CMP ZB & Matter/OT with Concurrent Listening on MG26 for SoC - GA - 802.15.4 Unified radio scheduler priority component - Debian packaging support for MP host applications - Alpha |
Release Notes |
v2024.6.2: Simplicity SDK 2024.6.2
Simplicity SDK Version 2024.6.2
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 8.2.0.0 | Bluetooth - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Location Services | 8.2.0.0 | - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Mesh SDK | 7.0.2.0 | - Targeted quality improvements and bug fixes. |
Release Notes |
| Gecko Platform | 5.0.2.0 | - Targeted quality improvements and bug fixes. |
Release Notes |
| OpenThread SDK | 2.5.2.0 | OpenThread - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Proprietary Flex SDK | 3.8.2.0 | RAIL Apps and Library - Targeted quality improvements and bug fixes. Connect Apps and Stack - Targeted quality improvements and bug fixes. |
Release Notes |
| USB Device Stack | 1.3.1.0 | - Same as previous release | Release Notes |
| Wi-SUN SDK | 2.2.0.0 | Wi-SUN Stack - Targeted quality improvements and bug fixes. Wi-SUN Applications - Targeted quality improvements and bug fixes. |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.22.2.0 | - 7.22.2 GA is self-certified according to the approved 2024A Specification test suite. - User Credential Command Class implementation is adapted based on the state of the Z-Wave Specification at the time of the 7.22.2 GA release, which may change until the 2024-B1 Z-Wave Specification release. - 7.22.0 GA is officially certified according to the approved 2023B Specification test suite and can be selected on Z-Wave Alliance Certification Portal for End Device product certification. |
Release Notes |
| Zigbee EmberZNet SDK | 8.0.2.0 | Zigbee - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
v2024.6.1
Simplicity SDK Version 2024.6.1
| Component | Version | Summary | Details |
|---|---|---|---|
| Bluetooth SDK | 8.1.0.0 | Bluetooth - New APIs and Channel Sounding stability improvements. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Bluetooth Location Services | 8.1.0.0 | - Channel Sounding based distance estimation support. |
Release Notes |
| Bluetooth Mesh SDK | 7.0.1.0 | - Support for delta-compressed firmware updates. |
Release Notes |
| Platform | 5.0.1.0 | - Added missing EFR32xG26 devices to pintool. - Added support for EFR32BG27C320F768IJ39. Gecko Bootloader - Added Delta DFU for Application upgrade. RAIL 5.0.1 - Added support of automatic LNA bypass on the EFR32xG25 parts. |
Release Notes |
| OpenThread SDK | 2.5.1.0 | OpenThread - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |
| Proprietary Flex SDK | 3.8.1.0 | RAIL Apps and Library - Targeted quality improvements and bug fixes. Connect Apps and Stack - Targeted quality improvements and bug fixes. |
Release Notes |
| USB Device Stack | 1.3.1.0 | - Underlying platform changes only | Release Notes |
| Wi-SUN SDK | 2.1.0.0 | Wi-SUN Stack - Targeted quality improvements and bug fixes. Wi-SUN Applications - Targeted quality improvements and bug fixes. |
Release Notes |
| Z-Wave and Z-Wave Long Range 800 SDK | 7.22.1.0 | - 7.22.1 GA is self-certified according to the approved 2023B Specification test suite. - 7.22.0 GA is officially certified according to the approved 2023B Specification test suite and can be selected on Z-Wave Alliance Certification Portal for End Device product certification. |
Release Notes |
| Zigbee EmberZNet SDK | 8.0.1.0 | Zigbee - Targeted quality improvements and bug fixes. Multiprotocol - Targeted quality improvements and bug fixes. |
Release Notes |