---
title: Upgrade Guide for Release 3.1.0
slug: singleconnect-release-notes-3-1-0/upgrade-guide-for-release-310
description: Upgrade your Single Connect solution with ease using the Single Connect Upgrade Guide. Designed for administrators and clients responsible for installation and upgrades, this guide provides step-by-step instructions and essential information on related do
docTags: 
createdAt: 2022-08-15T08:32:00.000Z
---

# About This Upgrade Guide

The Single Connect Upgrade Guide walks you through the process of upgrading the Single Connect solution. This guide includes pre-upgrade and upgrading steps and other guidelines.

Make sure you read this guide thoroughly and follow the upgrading steps to ensure a smooth upgrade process.

# Audience

This guide addresses administrators and clients responsible for installing and upgrading the Single Connect solution.

## Version Information

This guide is valid for:

- Upgrading the Single Connect from 3.0.0 to 3.1.0.

## Related Documentation

Find the links to the related documentation set below. Note that only registered users can access these documents

- [3.1.0 Release Notes](docId\:qt3eJ8lZddZC6kcqPVPwd) 
- [Reference Guide ](docId:0QNEjPz9653WYb8z_Y3zL) 

# Contact Us

If you need help with upgrading or have issues that we did not address in this document, contact us through the following channels:

- Open a ticket at Kron Support Portal. Only registered users can open support tickets.
- Send an email to [support-int@krontech.com](https://support.kron.com.tr:8443/servicedesk/customer/portal/78) . 
- Call Customer Service at +90 (539) 796 05 03. Customer service is 7/24 online for operational issues.

# Pre-Upgrade Steps

- Please find the upgrade script in the file repo under the following path and download it to the server.

`/home/krontech/singleconnect/updates/singleconnect-3.1.0-update.tar `

- Make sure that md5sum is correct before using the file.

*`MD5sum: “e5efb59868d7c470bc10d6659780491f”`*

- Single Connect now supports RHEL 8.5 which means old Single Connect platforms should be upgraded along with the OS.
- Release 3.1.0 is mainly designed to run on RHEL 8.5, however, it -partially- supports old CentOS 7.9 operating systems even though is designed for RHEL 8.5. This also means, 3.1.0 will be the last release that will be supporting CentOS.
- Even though it supports CentOS 7.9, we strongly recommend that existing installations on CentOS be moved to RHEL 8.5 with the assistance of Kron Support Engineers.
- If you are going to install it from scratch, you can get the OS (RHEL 8.5) image from Kron and deploy it to your ESX environment. After that, installation of the application can be done using 3.0.0 Core Installer (3.0.0 Core Installer can run only on RHEL 8.5 image that is provided by Kron) which can be followed by the upgrade of Release 3.1.0. This process also can be done with Kron Engineers.

# Upgrading Steps

Follow the steps below in the given order to upgrade Single Connect to 3.0.0:

1. Unzip the downloaded upgrade script.
2. Run the following SSH command:
   `tar -xvf singleconnect-3.1.0-update.tar`
3. Execute the upgrade script.
4. Run the following SSH command:
   `.\upgrade.sh `

A new text-based GUI installer will be assisting users during the installation.