.. _ncs_release_notes_141: |NCS| v1.4.1 Release Notes ########################## .. contents:: :local: :depth: 2 |NCS| delivers reference software and supporting libraries for developing low-power wireless applications with Nordic Semiconductor products. It includes the MCUboot and the Zephyr RTOS open source projects, which are continuously integrated and re-distributed with the SDK. The |NCS| is where you begin building low-power wireless applications with Nordic Semiconductor nRF52, nRF53, and nRF91 Series devices. nRF53 Series devices (which are pre-production) and Zigbee and Bluetooth mesh protocols are supported for development in v1.4.1 for prototyping and evaluation. Support for production and deployment in end products is coming soon. Highlights ********** * Qualified Zephyr Host to be conformant with Bluetooth Core Specification v5.2 * Updated Carrier Library to v0.10.1 Release tag *********** The release tag for the |NCS| manifest repository (|ncs_repo|) is **v1.4.1**. Check the ``west.yml`` file for the corresponding tags in the project repositories. To use this release, check out the tag in the manifest repository and run ``west update``. See :ref:`cloning_the_repositories` for more information. Supported modem firmware ************************ This version of the |NCS| has been tested with the following modem firmware for cellular IoT applications: * mfw_nrf9160_1.2.2 Use the latest version of the nRF Programmer app of `nRF Connect for Desktop`_ to update the modem firmware. See :ref:`nrf9160_gs_updating_fw_modem` for instructions. Changelog ********* The following sections provide detailed lists of changes by component. nRF9160 ======= * :ref:`liblwm2m_carrier_readme` library: * Updated to v0.10.1. See the :ref:`liblwm2m_carrier_changelog` for detailed information. * Updated the :ref:`lwm2m_certification` page by replacing the version dependency table with a link to Mobile network operator certifications. Multiprotocol Service Layer (MPSL) ================================== * Fixed the DRGN-15064 known issue where the External Full swing and External Low swing configuration sources of Low Frequency Clock were not working correctly. Zephyr ====== sdk-zephyr ---------- .. note:: Except for changes in Zephyr that were cherry-picked into |NCS| and described in the following section, there were no upstream commits incorporated into |NCS| in this release compared with the v1.4.0 release. .. NOTE TO MAINTAINERS: The latest Zephyr commit appears in multiple places; make sure you update them all. The `sdk-zephyr`_ fork in |NCS| contains all commits from the upstream Zephyr repository up to and including ``7a3b253ced``, plus some |NCS| specific additions. For a complete list of upstream Zephyr commits incorporated into |NCS| since the most recent release, run the following command from the :file:`ncs/zephyr` repository (after running ``west update``): .. code-block:: none git log --oneline 7a3b253ced ^v2.3.0-rc1-ncs1 For a complete list of |NCS| specific commits, run: .. code-block:: none git log --oneline manifest-rev ^7a3b253ced The current |NCS| release is based on Zephyr v2.4.0. See the :ref:`Zephyr v2.4.0 release notes ` for the list of changes. Zephyr changes incorporated into |NCS| -------------------------------------- This section contains changes in Zephyr that were cherry-picked into |NCS| for this release. * Added support for the :ref:`zephyr:actinius_icarus` board. Bluetooth Host ~~~~~~~~~~~~~~ * Qualified Zephyr Host to be conformant with Bluetooth Core Specification v5.2. These changes were cherry-picked in the |NCS| v1.4.1 Bluetooth Host qualification update, which contains the following changes: * Added qualification for Bluetooth Core Specification v5.2. Qualified new features are the following: * Advertising extension * Legacy OOB pairing * Fixed an issue where a pairing fail could lead to a GATT procedure failure. This fixes the NCSDK-6844 known issue in |NCS|. Known issues ************ See `known issues for nRF Connect SDK v1.4.1`_ for the list of issues valid for this release.