# How to Install & Update Checker Client

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This is an archived page. For the latest information, refer to the [checker guide](/checker-guide.md).
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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`</mark> into the directory
4. <mark style="color:red;">`sudo ./install.sh`</mark>
5. <mark style="color:red;">`sudo ./AethirCheckerCLI`</mark>

**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 uninstall your checker client and manually install the latest 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/kPZrENnFevgaVvnFvABV" 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).


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