edits from Kari and Shantha

Signed-off-by: Grzegorz Ferenc <Grzegorz.Ferenc@nordicsemi.no>

doc/nrf/installation/install_ncs.rst

@@ -59,6 +59,8 @@ Depending on your preferred development environment, install the following requi
       * The latest version of `nRF Util development tool`_, a unified command line utility for Nordic products.
 
         .. note::
+            nRF Util has its own `operating system requirements <nRF Util_>`_.
+
             After downloading the nRF Util executable, move it to a directory that is in the system :envvar:`PATH`.
             On macOS and Linux, the downloaded file also needs to be given execute permission by typing `chmod +x nrfutil` or by checking the checkbox in the file properties.
 

doc/nrf/installation/recommended_versions.rst

@@ -18,123 +18,37 @@ Supported operating systems
 ***************************
 
 The |NCS| supports Microsoft Windows, Linux, and macOS for development.
-The following tables list the support levels for tools and firmware.
-
-Tier definitions
-  The tables use the following tier definitions to categorize the level of operating system support:
-
-  .. toggle:: Support levels
-
-     .. list-table::
-        :header-rows: 1
-
-        * - Tier level
-          - Building
-          - Testing
-          - Failures
-        * - **Tier 1 (recommended)**
-          - Successfully built.
-          - Successfully tested.
-          - Any failures block the release until they are fixed or a viable workaround is found.
-        * - **Tier 2**
-          - Building on this version is successfully executed at the :ref:`minimum recommended version of tools <requirements_toolchain>`.
-          - A manual sanity check is done based on risk.
-          - Failures do not block the release and are listed on the :ref:`known_issues` page.
-            Best effort is made to address them by the next official release.
-        * - **Tier 3**
-          - The |NCS| tools and firmware are supported by design, but are not built after each change.
-          - The |NCS| tools and firmware are supported by design, but are not tested after each change.
-          - The application firmware may or may not work.
-        * - **Not supported**
-          - The |NCS| tools and firmware do not work with this version.
-          - ---
-          - ---
-        * - **Not applicable (n/a)**
-          - The specified architecture is not supported for the respective operating system.
-          - ---
-          - ---
 
-Zephyr features only available on Linux
-  There are some Zephyr features that are currently only available on Linux, including:
-
-  * BlueZ integration
-  * net-tools integration
-  * Native Port (native_posix)
-  * BabbleSim
-
-Supported operating systems for tools
-=====================================
-
-The following table shows the operating system versions that support the |NCS| tools:
+The following tables lists the support levels for the |NCS| firmware.
+In this table, _built_ means building samples and application for platform integration as defined in :file:`sample.yml` for the default configuration for the given sample or application.
 
 .. os_table_start
 
 .. list-table::
   :header-rows: 1
 
   * - Operating System
-    - x86
     - x64
     - ARM64
-  * - `Windows 11`_
-    - Tier 3
-    - Tier 3
-    - Not supported
   * - `Windows 10`_
-    - Tier 3
-    - Tier 1
-    - Not supported
-  * - `Linux - Ubuntu 24.04 LTS`_
-    - Not supported
-    - Tier 2
-    - Not supported
+    - Built with software tests.
+    - Not supported.
   * - `Linux - Ubuntu 22.04 LTS`_
-    - Not supported
-    - Tier 1
-    - Not supported
-  * - `Linux - Ubuntu 20.04 LTS`_
-    - Not supported
-    - Tier 2
-    - Not supported
-  * - `macOS 15`_
-    - n/a
-    - Tier 3
-    - Tier 3
+    - Built with software tests. Tested with Nordic Semicondutor hardware.
+    - Not supported.
   * - `macOS 14`_
-    - n/a
-    - Tier 3
-    - Tier 3
-  * - `macOS 13`_
-    - n/a
-    - Tier 1
-    - Tier 1
+    - Built with software tests.
+    - Built **using `macOS 13`_**.
 
 .. os_table_end
 
-Supported operating systems for firmware
-========================================
-
-The following table shows the operating system versions that support the |NCS| firmware:
-
-.. list-table::
-  :header-rows: 1
+Zephyr features only available on Linux
+  There are some Zephyr features that are currently only available on Linux, including:
 
-  * - Operating System
-    - x86
-    - x64
-    - ARM64
-  * - `Windows 11`_
-    - Tier 3
-    - Tier 3
-    - Not supported
-  * - `Linux - Ubuntu 22.04 LTS`_
-    - Not supported
-    - Tier 1
-    - Not supported
-  * - `macOS 14`_
-    - Not applicable
-    - Tier 3
-    - Tier 3
+  * BlueZ integration
+  * net-tools integration
+  * Native Port (native_posix)
+  * BabbleSim
 
 .. _requirements_toolchain:
 
@@ -415,7 +329,7 @@ nRF Util
 The `nRF Util development tool`_ is a unified command line utility for Nordic products.
 Its functionality is provided through installable and upgradeable commands that are served on a central package registry on the Internet.
 
-The utility follows its own release cycle.
+The utility follows its own release cycle and has its own `operating system requirements <nRF Util_>`_.
 Use the latest available release for development.
 
 nRF Util provides |NCS| toolchain packages for each |NCS| release through the ``toolchain-manager`` command.

doc/nrf/links.txt

@@ -598,7 +598,6 @@
 .. _`nRF Connect Serial Terminal`: https://docs.nordicsemi.com/bundle/nrf-connect-serial-terminal/page/index.html
 .. _`Connecting using Serial Terminal`: https://docs.nordicsemi.com/bundle/nrf-connect-serial-terminal/page/connecting.html
 .. _`Serial Terminal configuration`: https://docs.nordicsemi.com/bundle/nrf-connect-serial-terminal/page/configuration.html
-.. _`nRF Sniffer for Bluetooth LE`: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-ble-sniffer/guides/overview.html
 .. _`nRF Connect Bluetooth Low Energy`: https://docs.nordicsemi.com/bundle/nrf-connect-ble/page/index.html
 .. _`Cellular Monitor`: https://docs.nordicsemi.com/bundle/nrf-connect-cellularmonitor/page/index.html
 .. _`nPM PowerUP`: https://docs.nordicsemi.com/bundle/nrf-connect-npm/page/index.html
@@ -613,8 +612,6 @@
 .. _`Programming the nRF52840 Dongle`:
 .. _`Programming a Development Kit`: https://docs.nordicsemi.com/bundle/nrf-connect-programmer/page/programming_dk.html
 
-.. _`nRF Sniffer for Bluetooth LE`: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-ble-sniffer/guides/overview.html
-
 .. _`nRF Thread Topology Monitor`: https://docs.nordicsemi.com/bundle/ug_nrf_ttm/page/UG/nrf_ttm/ttm_introduction.html
 .. _`nRF Sniffer for 802.15.4`: https://docs.nordicsemi.com/bundle/ug_sniffer_802154/page/UG/sniffer_802154/intro_802154.html
 .. _`Configuring Wireshark for Zigbee`: https://docs.nordicsemi.com/bundle/ug_sniffer_802154/page/UG/sniffer_802154/configuring_sniffer_802154_zigbee.html
@@ -810,6 +807,7 @@
 .. _`Toolchain Manager command`: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-toolchain-manager/nrfutil-toolchain-manager_0.14.1.html#available-subcommands
 .. _`Recovering the device`: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-device/guides/programming_recovery.html
 .. _`nrfutil-trace`: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-trace/CHANGELOG.html
+.. _`nRF Sniffer for Bluetooth LE`: https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-ble-sniffer/guides/overview.html
 
 .. _`anomaly 19`: https://docs.nordicsemi.com/bundle/errata_nRF5340_EngA/page/ERR/nRF5340/EngineeringA/latest/anomaly_340_19.html