Simplicity SDK Platform Version 6.0.3 - Release Notes (Nov 4, 2026#

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

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Release Summary#

Release Item	Version	Release Date	Release Notes	Key Features	API Changes	Bug Fixes	Chip Enablement
Platform MCU	6.0.3	Nov 4, 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.	UARTDRV, SPIDRV, and sl_main: low-power and initialization fixes. HAL EUSART and ACMP driver fixes. Linker, CMSIS device, and SiXG301 family related fixes.	None.
Bootloader	3.2.2	Nov 4, 2026	Release Notes	None.	None.	Fixed an issue where the GBL parser and application-version calls did not check the caller-provided pointer before storing the result.	None.
Security	6.0.3	Nov 4, 2026	Release Notes	None.	None.	Fixed an issue in the PSA driver for AES encryption on HSE devices where a memcpy() call could read beyond the input buffer when the data length was not a multiple of 16 bytes.	None.
Micrium OS	6.0.3	Nov 4, 2026	Release Notes	None	None	Corrected Studio configuration labels for BSP and CPU options.	None.
CPC	4.8.4	Nov 4, 2026	Release Notes	Soft reset capability for future usage. SPI driver maintenance: removed legacy MMLDMA workaround.	None.	Secondary SPI: detect RX queue size smaller than CPC RX buffer count. Secondary: fixed pending work detection in the Power Manager sleep callback in bare-metal mode. CPC daemon: fixed XMODEM crash during firmware update when RCP is already in bootloader mode. 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	6.0.2	May 4, 2026	Release Notes	None.	None.	None.	None.
RAIL Library	3.0.4	Nov 4, 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.

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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#

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