Bluetooth LE Version 10.1.0 (July 21, 2025) - Release Notes#
Simplicity SDK Version 2025.6.1
Silicon Labs is a leading vendor in Bluetooth hardware and software technologies, used in products such as sports and fitness, consumer electronics, beacons, and smart home applications. The core SDK is an advanced Bluetooth 6.0-compliant stack that provides all of the core functionality along with multiple API to simplify development. The core functionality offers both standalone mode, allowing a developer to create and run their application directly on the SoC, or in NCP mode allowing for the use of an external host MCU.
Click here for earlier releases.
Release Summary#
| Release Item | Version | Release Date | Release Notes | Key Features | API Changes | Bug Fixes | Chip Enablement |
|---|---|---|---|---|---|---|---|
|
Example and Middleware |
10.1.0 |
July 21, 2025 |
None |
None |
|
|
|
|
Host Stack |
10.1.0 |
July 21, 2025 |
Periodic Advertising Synchronization Transfer (PAST) over Periodic Advertising with Responses (PAwR) |
None |
None |
N/A | |
|
Controller |
10.1.0 |
July 21, 2025 |
Periodic Advertising Synchronization Transfer (PAST) over Periodic Advertising with Responses (PAwR) |
None |
None |
N/A | |
|
802.15.4 Mesh + BLE Multiprotocol |
2.7.1 |
July 21, 2025 |
None |
None |
|
None |
Impact of Release Changes#
Impact Statements | Migration Guide
Impact Statements#
| Change | Impact | Affected Software Variants if applicable | Affected Modes | Affected OPNs / Boards / OPN Combinations | Affected Host Interfaces |
|---|---|---|---|---|---|
|
Removal of the BLE support for Amazon AWS IoT |
Use earlier SiSDK releases for existing projects. Using BLE of the Amazon AWS IoT is not recommended for new projects since it has been deprecated. |
N/A |
SoC |
All |
None |
Using This Release#
What's in the Release? | Compatible Software | Installation and Use | Help and Feedback
What's in the Release?#
Compatible Software#
| Software | Compatible Version or Variant |
|---|---|
| Simplicity SDK | 2025.6.1 |
| Simplicity Studio | 5.11.0.0 |
| Simplicity Commander | 1.18.2 (provided with Simplicity Studio) |
| GCC (The GNU Compiler Collection) | 12.2.1 (provided with Simplicity Studio) |
| IAR Embedded Workbench for ARM (IAR-EWARM) | 9.40.1 |
Installation and Use#
To run your first demo, see our Getting Started Guides.
To kick start your development, see our Developer's Guide.
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To learn more about the software in this release, dive into our online documentation.
Help and Feedback#
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SDK Release and Maintenance Policy#
See our SDK Release and Maintenance Policy.