Amazon Sidewalk Version 2.5.0 (June 30 2025) - Release Notes#

Simplicity SDK Version 2025.6.0

Amazon Sidewalk is a secure, low-bandwidth, long-range wireless protocol designed to connect smart devices and extend their range beyond standard Wi-Fi or Bluetooth. It enables seamless connectivity for IoT devices in homes and neighborhoods, supporting features like device tracking, smart lighting, and sensor networks. For information about previous releases, see the release notes archive.

Release Summary#

Key Features | API Changes | Bug Fixes | Chip Enablement

Key Features#

  • Supporting SiSDK 2025.6.0.

  • Supporting Semtech's LR1110.

  • RAIL, sx1262, and lr1110 as a SW component.

API Changes#

None.

Bug Fixes#

  • Fixed a bug where the RAIL calibration error was not handled correctly on xG28 with DMP using FSK link.

  • Fixed a bug where warning log messages about TX power were displayed when using RAIL radio.

Chip Enablement#

xGM260P support.

Key Features#

New Features | Enhancements | Removed Features | Deprecated Features

New Features#

None.

Enhancements#

  • SLCP files are merged for every sample application.

  • BLE-only mode can be selected for chips which support BLE. SubGHz component can be disabled.

  • Out of the Box demo binaries are updated, now using latest Sidewalk stack and SiSDK version.

Removed Features#

None.

Deprecated Features#

None.

API Changes#

New APIs | Modified APIs | Removed APIs | Deprecated APIs

New APIs#

None.

Modified APIs#

None.

Removed APIs#

None.

Deprecated APIs#

None.

Bug Fixes#

ID Issue Description GitHub / Salesforce Reference (if any) Affected Software Variants, Hardware, Modes, Host Interfaces
1410675 RAIL calibration error on xG28 with DMP using FSK link. None.
  • Amazon Sidewalk - SoC Dynamic Multiprotocol Light
  • BRD4401C, BRD4400C
  • SoC
1452596 Warning log messages about TX power when using RAIL radio. None.
  • Amazon Sidewalk - SoC Hello Neighbor, Amazon Sidewalk - SoC CLI
  • All the xg28, xg23 radio boards
  • SoC
  • PAL

Chip Enablement#

Chip Family OPNs / Boards / OPN Combinations Supported Software Variants (if applicable) Supported Modes Supported Host Interfaces
MGM260P
  • OPN: EFR32MG26B420F3200IM48-B, EFR32MG26B410F3200IM48-B, EFR32MG26B421F3200IM48-B, EFR32MG26B411F3200IM48-B, EFR32BG26B411F3200IM48-B, EFR32BG26B421F3200IM48-B
  • Boards: BRD4350A, BRD4351A, BRD2713A
 N/A SoC UART, RTT

Application Example Changes#

New Examples | Modified Examples | Removed Examples | Deprecated Examples

New Examples#

None.

Modified Examples#

None.

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
1469745 Wrong RSSI value on xG28 when using FSK. N/A No workaround is possible.
  • EFR32ZG28B322F1024, EFR32ZG28B320F1024, EFR32ZG28B312F1024
  • BRD4401C, BRD4400C, BRD4401B, BRD2705A
  • SoC

Impact of Release Changes#

Impact Statements | Migration Guide

Impact Statements#

None.

Migration Guide#

None.

Using This Release#

What's in the Release? | Compatible Software | Installation and Use | Help and Feedback

What's in the Release?#

The Sidewalk MCU SDK v2.5.0 release introduces several new capabilities and platform expansions. This release includes updated Out-of-the-Box (OOB) binaries, support for the Semtech LR1110 chip, and enables Semtech-based solutions on EFR32xG28 SoCs. It also adds compatibility with the latest Silicon Labs Series 3 devices, including the xG301 family. Developers benefit from an easier configuration flow allowing seamless switching between Sub-GHz driver configurations and BLE-only solutions. Additionally, the SDK now supports the latest Silicon Labs SDK version 2025.6.0. This release includes Sidewalk SDK version 1.18.

Compatible Software#

Software Compatible Version or Variant
Simplicity SDK SiSDK 2025.6.0
Amazon Sidewalk SDK 1.18

Installation and Use#

To run your first demo, see our Getting Started Guides.

To kick start your development, see our Developer's Guide.

For information about Secure Vault Integration, see Secure Vault.

To review Security and Software Advisory notifications and manage your notification preferences:

  1. Go to https://community.silabs.com/.

  2. Log in with your account credentials.

  3. Click your profile icon in the upper-right corner of the page.

  4. Select Notifications from the dropdown menu.

  5. In the Notifications section, go to the My Product Notifications tab to review historical Security and Software Advisory notifications

  6. To manage your preferences, use the Manage Notifications tab to customize which product updates and advisories you receive.

For recommended settings, configurations, and usage guidelines, see our Developer's Guide.

To learn more about the software in this release, dive into our online documentation.

Help and Feedback#

Feature Matrix#

Unsupported Features#

  • Sidewalk Bulk Data Transfer (SBDT): Sidewalk BLE integrated OTA mechanism is available in our Sidewalk alpha repository as it is not publicly accessible on Amazon AWS side.

  • Switched Multiprotocol (SMP): Sidewalk, BLE, Z-Wave SMP PoC is available in our alpha repository.

SDK Release and Maintenance Policy#

See our SDK Release and Maintenance Policy.