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How to upgrade Joomla from 1.5.* to 2.5.*


         If you have Joomla 1.5 or older powered website and you need to upgrade it to newer version then you will need to do migration. Then good news is that now this will probably do in single click. You have not do exercise of backup/restoration of database, media, Articles, Categories, even 3rd party plugins and Custom Templates.
It is so important to note that there are two side to do upgrade

               *  Joomla Upgrade
                      *   Template Upgrade

This tutorial is only for Joomla upgrade and you must make sure that your template can either converted to newer version or you have newer template for new Joomla version. We will going to use JUpgrade to migrate website. JUpgrade is free migrating joomla plugin and required free registration to download.

Step 1

The very first thing you need to do is update your Joomla 1.5 website to the latest security update (1.5.25 at the time of writing). Click here for the tutorial on how to update your site.    

Step 2

create a backup of your website. 

Step 3

We are going to use jUpgrade to migrate our website. You can download jUpgrade from above link.

Step 4

Once you have downloaded jUpgrade, install it in existing joomla using the extension manager (Extensions -> Install / Uninstall).

Make sure that you have loggedin with Super Administrator. ( It required super administrator rights to migrate database and media.)


install_jupgrade


Step 5

You need to enable the System - Mootools Upgrade plugin before you can use jUpgrade so navigate to extensions then plugin manager, do a search for the plugin and enable it. (Extensions -> Plugin Manager)


system_mootools


Step 6

start_upgrade

Click on Start Upgrade, It will now upgrading automatically as below till completion Popup.




























New click on administrator, you will see Joomla newer version Login page and make sure that all content transferred successfully ( It will transfer only contents that will supported in new Joomla version)
JUpgrade will create new directory. Download & install Joomla newer version to new directory and transfer media and contents in newer one.


Akeeba backup is also one of the best way for backup/restore operations.







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