---
title: Update & Patch Installation
slug: kronpam-installation-guide/update-and-patch-installation
description: Learn how to install updates and patches for Single Connect, the software application, with this step-by-step document. Download the necessary core patch/update installation package from the SFTP server, extract the file, and run the update.sh command. Ch
docTags: 
createdAt: 2022-08-19T09:20:00.000Z
---

## Prerequisites

### Download the core patch/update installation package

Kron PAM installation packages are uploaded to SFTP Server, filerepo.krontech.com. The Kron support team provides customers with credentials and a core installer filename.

Download the Kron PAM core patch/update installation package to the target server from filerepo.krontech.com before starting the installation procedure. 

Make sure to download the file with the following patterns: singleconnect-x.xx.xx-patch.tar or singleconnect-x.xx.0-update.tar

Check the md5 hash of the file to ensure you downloaded the file without corruption. 

## Installing the Update & Patch Package

1. Extracting the downloaded file using the following command:
   ***\[root\@sc\~]#** tar -xvf Single Connect-2.17.0-update.tar *
2. Run the **update.sh** command. The script checks the statuses of the components and the current version of Kron PAM and then shows available updates.
3. The installer shows you two **installation types**. You need to select the second option, **Update** to install on an existing installation.

- Then the installer will show you the following three options:

| **Option**                          | **Description**                                                                                                   |
| ----------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
| **Database Updates Only**           | Applies only to database changes. Select this option only to apply database changes.                              |
| **Package Updates Only**            | Applies only to package changes. Select this option to install the patch on a node.                               |
| **Both Database & Package Updates** | Applies all packages and database changes. This option can be installed on all nodes involved in the replication. |

![](https://api.archbee.com/api/optimize/g9cApVza9NIhSh0pjZYtA/L63oPfkwQKQbGNaMC_lyR_image.png)

- Select the correct option (see the following table), and then press **Enter. **  

After selecting the correct option, the patch will be executed straightforwardly. Patch automatically restarts the Kron PAM components and database to apply changes. 


If the installation finishes successfully, no errors will be displayed. When the installation finishes, execute the health check commands described in the Kron PAM Maintenance and Operation Guide.

## Post Check

Check the latest status of the modules by using the following command:

***\[root\@sc\~]#** /u01/netright-tomcat/netright/scripts/list-sc-services.sh*

Open your web browser and type the URL address of Kron PAM Web GUI. The Kron PAM portal will load successfully.