# nRF Connect SDK (NCS) Installation

![](/files/7qWjHDUjLdKl9dFhhALH)

The Conexio devices currently only support [<mark style="color:red;">ZephyrRTOS</mark>](https://www.zephyrproject.org/). To access all the features and capabilities, Nordic Semiconductor has developed the [<mark style="color:red;">nRF Connect SDK</mark>](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/introduction.html) (NCS) which enables you to develop applications for nRF91 Series devices that power Conexio cellular devices.

{% hint style="info" %}
To support all the latest power and cellular features of the nRF91xx series SiP, Conexio Stratus device sample applications will only support nRF Connect SDK v2.7.x or newer.
{% endhint %}

To make nRF Connect SDK installation a breeze, follow the following steps.

* Download and install a cross-platform tool [<mark style="color:red;">nRF Connect for Desktop</mark>](https://www.nordicsemi.com/Products/Development-tools/nrf-connect-for-desktop) for your operating system.
* Install and run the nRF Connect tool on your machine.
* Click I**nstall** next to the Toolchain manager as shown below.

![The Toolchain Manager window](/files/0HNfgsTQtxqdMmMiS3a1)

* Once the Toolchain manager is installed, click open.

![The Toolchain Manager window](/files/55DDkfKrWEC7KzifeJpM)

* Select **nRF Connect SDK v2.7.0** or **v2.9.0** and click **Install**. Depending on your internet speed, it may take a few tens of minutes, so go and grab yourself a cup of coffee **☕**

<figure><img src="/files/U8PEwREmfyzjqYFguaZr" alt=""><figcaption></figcaption></figure>

* Once the installation is complete, click the dropdown menu and hit **Open Terminal**.

<figure><img src="/files/jGR9IK9bsiGEwQczw35s" alt=""><figcaption></figcaption></figure>

* This will open the terminal in the installed directory of the nRF Connect SDK as indicated. In our case **nordic/ncs/v2.7.0**.

<figure><img src="/files/HNN20kQps0n7amAtkti6" alt=""><figcaption></figcaption></figure>

Hooray🎉 . You have completed the first milestone.

**References**

1. [nRF Connect SDK](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/gs_assistant.html#gs-app-tcm) installation documentation by the Nordic Semiconductor.


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