Simplicity SDK Platform Version 6.0.1 - Release Notes (Mar 25, 2026)#

The Platform provides infrastructure support for applications developed with higher-level protocols, and it provides an interface with the underlying hardware.

Click here for earlier releases.

Release Summary#

Release Item	Version	Release Date	Release Notes	Key Features	API Changes	Bug Fixes	Chip Enablement
Platform MCU	6.0.1	Mar 25, 2026	Release Notes	sl_main: New application hook app_init_post_platform Linker: TrustZone workspaces can use remaining flash and RAM without specifying sizes.	None.	Clock Manager and Power Manager: fixes on SiXG301 Devices. Memory Manager: double-free issues fixed.	None.
Bootloader	3.2.1	Mar 25, 2026	Release Notes	Added EM4 GPIO retention during Firmware Upgrade feature for Series-2 devices. Added support for the xG2D device family.	Added API for EM4 GPIO retention during Firmware Upgrade.	Fixed a boot hardfault caused by power loss during the AXiP erase phase.	None.
Security	6.0.1	Mar 25, 2026	Release Notes	Added support for the Key Storage Unit (KSU) in the PSA Crypto API.	None.	None.	None.
Micrium OS	6.0.0	Jan 22, 2026	Release Notes	Restricted Micrium OS usage to Series 2 devices.	None.	None.	None.
CPC	4.8.3	Mar 25, 2026	Release Notes	Soft reset capability for future usage. SPI driver maintenance: removed legacy MMLDMA workaround.	None.	Secondary SPI: build fix when Recommended SPI interface component is used. CPC daemon: WSTK IP CLI and configuration parsing fixes. CPC daemon: restored test scripts; fixed version struct compilation error.	None.
MVP Math Library	6.0.1	Mar 25, 2026	Release Notes	None.	None.	None.	None.
RAIL Library	3.0.1	Mar 25, 2026	Release Notes	None.	None.	None.	None.

Impact of Release Changes#

Impact Statements | Migration Guide

Impact Statements#

None.

Migration Guide#

sl_main migration:
- See the sl_system to sl_main migration guide for detailed instructions.
- Learn more about using sl_system_compatibility in baremetal applications here.

Using This Release#

Installation and Use | Help and Feedback

Installation and Use#

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

For information about Secure Vault Integration, see Secure Vault.

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

Go to https://community.silabs.com/.
Log in with your account credentials.
Click your profile icon in the upper-right corner of the page.
Select Notifications from the dropdown menu.
In the Notifications section, go to the My Product Notifications tab to review historical Security and Software Advisory notifications
To manage your preferences, use the Manage Notifications tab to customize which product updates and advisories you receive.

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.