> For the complete documentation index, see [llms.txt](https://docs.aethir.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aethir.com/checker-guide/how-to-run-checker-nodes/install-and-update.md).

# Install & Update

Please note that you cannot run multiple Linux CLI or Windows GUI in one machine, as that would lead to unexpected error.

#### **Linux CLI**

**Download and Install**

1. Download from [app.aethir.com](http://app.aethir.com)
2. Unzip
3. <mark style="color:red;">`cd <unzipped-directory>`</mark>&#x20;
4. <mark style="color:red;">`sudo ./install.sh`</mark>
5. <mark style="color:red;">`sudo ./AethirCheckerCLI`</mark>
6. (Optional) Check the version <mark style="color:red;">`aethir version`</mark> . Make sure it is the newest version.

{% hint style="info" %}

#### GitHub Download

You can also download the latest version from the GitHub depository: <https://github.com/AethirApp/checker-client>
{% endhint %}

{% hint style="info" %}

#### Uninstall with sudo

If you wish to uninstall the client, please use <mark style="color:red;">`sudo ./install.sh uninstall`</mark>
{% endhint %}

**Update**

* Non-mandatory update: <mark style="color:red;">`aethir update`</mark>
* Mandatory update: will be updated automatically with a prompt `Your curent version is below the minimum required version. The program will be closing shortly to complete the version update. Please restart later to use.`

Note: Manual reinstallation is required for updating from v1.0.2.4 or below. Please kill the checker client if it is still running, and manually install the latest version.

1. Kill the old aethir app
2. Download from [app.aethir.com](http://app.aethir.com)
3. Unzip
4. <mark style="color:red;">`cd <unzipped-directory>`</mark>&#x20;
5. <mark style="color:red;">`sudo ./install.sh`</mark>
6. <mark style="color:red;">`sudo ./AethirCheckerCLI`</mark>
7. (Optional) Check the version <mark style="color:red;">`aethir version`</mark> . Make sure it is the newest version.

#### **Windows GUI**

**Download and Install**

1. Download and install the **Checker Client GUI** application from [app.aethir.com](http://app.aethir.com)

**Update**

* **Automatic update**: Versions after v1.0.2.4 will update automatically once detecting a new version.

  <figure><img src="/files/kalBG3vKR2i3KW1CxivP" alt=""><figcaption><p><strong>Checker Client GUI - Automatic Update</strong></p></figcaption></figure>
* **Manual update**: Alternatively, you can uninstall your checker client and manually install the latest version from [app.aethir.com](http://app.aethir.com).