Silicon Labs Aliro Version 2.0.0 (Aug 3, 2026) - Release Notes#

Simplicity SDK Version 2026.6.1

The Silicon Labs Aliro v2.0.0 release provides Aliro support in the Simplicity Studio environment. This release implements the Connectivity Standards Alliance (CSA) Aliro Specification version 1.0.0 on EFR32 MG24 and MG26 Series 2 SoCs and is intended for developers who want to build Aliro-enabled access control applications with the Simplicity SDK.

Release Summary#

Key Features | API Changes | Chip Enablement

Key Features#

• CSA Aliro Specification 1.0.0 reader implementation for NFC and Bluetooth LE on EFR32 MG24 and MG26.

• Aliro Minimal Reader and AliroMatterLock sample applications (NFC and BLE variants).

• Matter over Thread integration for Aliro-enabled door lock applications (AliroMatterLock).

• Aliro Shell CLI for bring-up, diagnostics, and certification test selection.

• Step-up transaction support (NFC only).

• Packaged as a Simplicity SDK extension with SLC components.

API Changes#

None.

Chip Enablement#

See Chip Enablement.

Key Features#

New Features | Enhancements | Removed Features | Deprecated Features

New Features#

• Aliro Reader library for EFR32 MG24 and MG26 implementing the CSA Aliro Specification version 1.0.0 expedited-standard and step-up phases.

• NFC transport with ST25R200 or ST25R300 frontends through the vendor-neutral INfcFrontend interface.

• Bluetooth LE transport for Aliro RKE using L2CAP.

• Aliro access protocol, trust framework, and step-up transaction support.

• Aliro Shell SLC component with an interactive CLI over the project UART-backed stdio streamer; enabled by default in bundled example projects.

• AliroMatterLock — Matter over Thread door lock example with an integrated Aliro reader (NFC or BLE); requires Silicon Labs Matter Extension.

• Sample applications and solution templates for Aliro Minimal Reader, AliroMatterLock.

• Certification test configuration scenarios selectable at runtime.

Enhancements#

None.

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.

Chip Enablement#

Aliro Is Supported on the Following EFR32 Series 2 Boards#

• BRD4186C / SLWSTK6006A / Wireless Starter Kit / 2.4 GHz @ 10 dBm - xG24-RB4186C

• BRD4187C / SLWSTK6006A / Wireless Starter Kit / 2.4 GHz @ 20 dBm - xG24-RB4187C

• BRD2601B / MG24 Developer Kit - xG24-DK2601B

• BRD4116A, BRD4117A, BRD4118A, BRD4120A, BRD4121A

NFC Frontend Support#

• ST25R200 on the STM X-NUCLEO-NFC10A1 evaluation board.

• ST25R300 on the STM X-NUCLEO-NFC12A1 evaluation board.

NFC projects require a custom expansion adapter between the EFR32 Pro Kit and the ST Nucleo NFC evaluation board. Other NFC reader ICs can be supported by providing an SLC component that provides: aliro_nfc_driver.

Application Example Changes#

New Examples | Modified Examples | Removed Examples | Deprecated Examples

For the list of supported application examples, see New Examples.

New Examples#

• Aliro - SoC Minimal Reader NFC

• Aliro - SoC Minimal Reader BLE

• Aliro Matter - Thread SoC Door Lock NFC

• Aliro Matter - Thread SoC Door Lock BLE

Modified Examples#

None.

Removed Examples#

None.

Deprecated Examples#

None.

Known Issues and Limitations#

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?#

• Silicon Labs Aliro SDK extension for use with Simplicity Studio and SLC-CLI.

• Silicon Labs Aliro sample applications (Aliro Minimal Reader and AliroMatterLock).

Compatible Software#

Installation and Use#

To get started, download Simplicity Studio from the following link: https://www.silabs.com/developers/simplicity-studio, and install Simplicity SDK v2026.6.1. For AliroMatterLock projects, also install Silicon Labs Matter Extension v2.9.1 compatible with Simplicity SDK 2026.6.1.

The Aliro Extension is available upon request. Reach out to the Silicon Labs Sales team to arrange access. Once access is granted, install the Aliro Extension (Studio → Packages → Installation Wizard → Advanced).

Create a new project from the Projects tab (Create New Project), filter on Aliro, and follow the prompts. Solution templates include a bootloader project and produce a combined flash image.

Projects can be built and flashed in Visual Studio Code with the Simplicity Studio for VS Code extension.

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.

Help and Feedback#

• Contact Silicon Labs Support.

• To use our Ask AI tool to get answers, see the search field at the top of this page.

• Get help from our developer community.

SDK Release and Maintenance Policy#

See our SDK Release and Maintenance Policy.

Additional Information#

None.