Release Notes#

Version 2.1.1 (Aug 20, 2026)#

Summary#

Adds support for flashing target devices over a serial port and changes the maximum PTI baud rate from 3.2 MBaud to 4.0 MBaud.

Package Update Matrix#

Package

Added

Changed

Fixed

Notes

D

Flashing over serial

Max PTI baud rate to 4.0 MBaud

Minor bug fixes

None

Notes#

  • None.

Common Changes#

Fixed Issues#

  • Minor bug fixes.

Variant-Specific Changes#

Package D#

Added:

  • Support for flashing the target device over a serial port from PC tools.

Changed:

  • Maximum PTI baud rate changed from 3.2 MBaud to 4.0 MBaud.

Known Issues and Limitations#

Common#

  • VUART on Series 2 devices may stop working after a reset of the target device. (Unchanged)

Variant-Specific#

  • None.

Version 2.1.0 (Aug 19, 2025)#

Summary#

Adds support for flashing target devices over a serial port from PC tools for variants E and F, and changes the maximum PTI baud rate for variants B and E.

Package Update Matrix#

Package

Added

Changed

Fixed

Notes

B

None

Max PTI baud rate to 3.8 MBaud

Minor bug fixes

None

E

Flashing over serial

Max PTI baud rate to 5.6 MBaud

Minor bug fixes

None

F

Flashing over serial

None

Minor bug fixes

None

Notes#

  • None.

Common Changes#

Added Features#

  • None.

Changed#

  • None.

Fixed Issues#

  • Minor bug fixes.

Variant-Specific Changes#

Package B#

Changed:

  • Maximum PTI baud rate changed from 3.2 MBaud to 3.8 MBaud.

Package E#

Added:

  • Support for flashing the target device over a serial port from PC tools.

Changed:

  • Maximum PTI baud rate changed from 3.2 MBaud to 5.6 MBaud.

Package F#

Added:

  • Support for flashing the target device over a serial port from PC tools.

Known Issues and Limitations#

Common#

  • VUART on Series 2 devices may stop working after a reset of the target device. (Unchanged)

Variant-Specific#

  • None.

Version 2.0.1 (Aug 15, 2025)#

Summary#

Adds general CLI command improvements across all packages, and fixes an issue where stored PTI configuration was not applied on boot.

Package Update Matrix#

Package

Added

Fixed

Notes

B

CLI improvements

PTI configuration on boot

None

D

CLI improvements

PTI configuration on boot

None

E

CLI improvements

PTI configuration on boot

None

F

CLI improvements

None

None

Notes#

  • None.

Common Changes#

Added Features#

  • General improvements for CLI commands.

Fixed Issues#

  • (Packages B, D, E) Stored PTI configuration was not applied on boot.

Variant-Specific Changes#

  • None.

Known Issues and Limitations#

Common#

  • VUART on Series 2 devices may stop working after a reset of the target device. (Unchanged)

Variant-Specific#

  • None.

Version 2.0.0 (Jul 07, 2025)#

Summary#

Introduces WinUSB driver mode and PCODE/HSS support across all variants and updates the bootloader to 0.13.0 for the E variant.

Package Update Matrix#

Package

Added

Fixed

Notes

B

WinUSB support, PCODE/HSS support

None

None

D

WinUSB support, PCODE/HSS support

None

None

E

WinUSB support, PCODE/HSS support, Bootloader 0.13.0

CTUNE read fix

None

F

WinUSB support, PCODE/HSS support

None

None

Notes#

  • When upgrading from any version earlier than 2.0.0 to 2.0.0 or later, the adapter automatically switches to WinUSB. This changes the USB PID and can affect setups that depend on the previous PID. On Windows 7 or earlier, install the latest SEGGER J-Link package with "Legacy drivers" enabled before updating.

If needed, the mode can be changed back to SEGGER using either one of:

  • Simplicity Commander: commander adapter drivermode or GUI.

  • Admin console: The sys drivermode command.

  • SEGGER J-Link Configurator.

Common Changes#

Added Features#

  • WinUSB support.

  • PCODE and HSS support.

Fixed Issues#

  • None.

Variant-Specific Changes#

Package E#

Added:

  • Bootloader updated to version 0.13.0.

Fixed:

  • Reading CTUNE value could return garbage if no value was set in the radio board.

Known Issues and Limitations#

Common#

  • VUART on series 2 devices may stop working after a reset of the the target device. (Unchanged)

Variant-Specific#

  • None.