OpenThread - 802.15.4 Mesh + BLE Multiprotocol Version 2.7.1 (July 21, 2025) - Release Notes#
Simplicity SDK Version 2025.6.1
This document provides release information for the 802.15.4 Mesh + BLE Multiprotocol SDK.
Click here for earlier releases.
Release Summary#
Key Features | API Changes | Bug Fixes | Chip Enablement
Key Features#
Added in 2.7.1#
None.
Added in 2.7.0#
ZigbeeD, OTBR and BLE support on OpenWRT – GA
Zigbee + BLE DMP support on EFR32xG29 - GA
API Changes#
None.
Bug Fixes#
Fixed in 2.7.1#
Targeted quality improvements and bug fixes.
Fixed in 2.7.0#
Multipan RCP Improvements
Zigbee-NCP + OpenThread-RCP Improvements
Zigbee-BLE DMP Improvements
Targeted quality improvements and bug fixes
Chip Enablement#
None.
Key Features#
New Features | Enhancements | Removed Features | Deprecated Features
New Features#
Added in 2.7.1#
None.
Added in 2.7.0#
Add zigbeed
option flag to point to zigbeed.conf
Enhancements#
Changed in 2.7.1#
None.
Changed in 2.7.0#
The RAIL 802.15.4 Multiplexer
, 802.15.4 Unified radio scheduler priority
and Spinel Host Interface - CPC
components are now showing up under the 802.15.4
high-level category in Simplicity Studio.
Removed Features#
None.
Deprecated Features#
None.
API Changes#
New APIs | Modified APIs | Removed APIs | Deprecated APIs
New APIs#
None
Modified APIs#
None
Removed APIs#
Removed in 2.7.1#
None.
Removed in 2.7.0#
Removed API Name | Was Deprecated? |
---|---|
sl_sec_man_init | Yes |
Deprecated APIs#
Removed in 2.7.1#
None.
Deprecated in 2.7.0#
Deprecated API Name | Planned Removal Date |
---|---|
2025 Dec |
Bug Fixes#
Fixed in 2.7.1#
ID | Issue Description | GitHub / Salesforce Reference (if any) | Affected Software Variants, Hardware, Modes, Host Interfaces |
---|---|---|---|
1471746 | Fixed an issue where the Zigbee + Bluetooth NCP application examples would not show in Simplicity Studio. | None | Zigbee+BLE NCP apps |
Fixed in 2.7.0#
ID | Issue Description | GitHub / Salesforce Reference (if any) | Affected Software Variants, Hardware, Modes, Host Interfaces |
---|---|---|---|
1363050 | Zigbee stack initialization no longer activates the radio (or RCP for host stacks) prior to stack APIs being called by the application. This prevents unwanted multi-PAN operation on Channel 11 (the default channel) when using a multi-PAN-capable RCP configuration. (Other ref: 1390725) | SF: 00320314 | All apps utilizing Zigbee |
1366854 | Fixed an issue where a CPC message from an RTOS-enabled RCP to host could be waiting in a send queue until something woke up the serial task. | None | All RCP apps utilizing CPC |
1375724 | Fixed a race condition on the multipan RCP that resulted in a transmit complete message not being returned to the host, causing a 5 second pause in further transmissions prior to recovering. | None | All RCP apps |
1378298 | Fixed an issue that caused a crash when entering keys print on an DMP Light app with LTO enabled. | None | All SoC apps |
1381165 | Fixed an issue where disabling PTA on Zigbee-NCP + OT-RCP could cause NCP/RCP to reset. | None | All CMP NCP+RCP apps |
1393057 | Fixed an issue where sample project generations for Zigbee-NCP + OpenThread-RCP (UART & SPI) and Zigbee-NCP + BLE-NCP (UART & SPI) were allowed on parts with insufficient RAM. | SF: 00322443 | CMP NCP+RCP and DMP ZB+BLE apps |
1399687, 1426191 | Fixed an issue where the Zigbee-BLE DMP Light app wouldn't go to EM2 sleep. | SF: 00326199, 00326520 | All DMP apps |
Chip Enablement#
None.
Application Example Changes#
New Examples | Modified Examples | Removed Examples | Deprecated Examples
New Examples#
None.
Modified Examples#
Modified in 2.7.1#
None.
Modified in 2.7.0#
Example Name | Changes | Supported Software Variants if applicable | Supported Modes | Supported OPNs / Boards / OPN Combinations | Supported Host Interfaces |
---|---|---|---|---|---|
Zigbee - BLE Dynamic Multiprotocol Light SED See sample here |
|
N/A | N/A | N/A | N/A |
Zigbeed See sample here |
|
N/A | N/A | N/A | N/A |
Removed Examples#
None.
Deprecated Examples#
None.
Known Issues and Limitations#
ID | Issue or Limitation Description | GitHub / Salesforce Reference (if any) | Workaround (if any) | Affected Software Variants, Hardware, Modes, Host Interfaces |
---|---|---|---|---|
1209958 | The Zigbee + OpenThread + BLE RCP may stop working in endurance testing (~2 hours) on MG24 and MG21 devices with constant and concurrent traffic on all three stacks. | None | None | Zigbee + OpenThread + BLE RCP app |
1385052 | Coex-enabled RCP may still occasionally transmit TX ACK after losing the Grant even when Acking is disabled and TX Abort is enabled. | None | This will be fixed in future releases. | Coex-enabled RCP |
1385486 | TX from coex-enabled RCP may infrequently happen without the request after turning on the non-802.15.4 compliant MAC Holdoff coex option. | None | This will be fixed in future releases. | Coex-enabled RCP |
1457086 | Coex-enabled EFR32MG24 RCP may sometimes output higher than expected grant denied counts in the PTA counters. | None | This will be fixed in future releases. | Coex-enabled RCP |