Step 1:
Make sure you have a current backup of your site.
Step2:
PHP 5.3.1 is required for joomla 3.x
Check these in php.ini file.
1. register_globals must be off
2. magic_quotes_gpc must be off
Supported Databases:
1. MySQL (InnoDB support required) 5.1 +
2. MSSQL 10.50.1600.1 +
3. PostgreSQL 8.3.18 +
Supported Web Servers:
1. Apache(with mod_mysql, mod_xml, and mod_zlib) 2.x+
Step3:
The recommended way to upgrade Joomla version is to use the Joomla Update component found in the Components menu of your site Administrator. This will show an update indication. If it is showing joomla is up to date then go to the site maintenance option and clean all cache an purge cache and global checkin. Now refresh the page.
it will show the update indication.
Step4:
Click at this icon you will get this screen .
Here if Joomla update will show your current joomla version2.5.x and Latest joomla version 2.5.x. But you want to upgrade your joomla to 3.1 vesion . Then go to the options .
Step5:
Select Short term support from Update server option and save it. It now show latest joomla version is 3.1.5. Even if it’s not showing 3.1.x then clear all website cache and also go to control panel and click on Updates are available option and purge cache. After that open Joomla update component and it will surely show latest 3.1.x version.
Now click on Install the update option. And wait until the updation process completion. It may take several minutes.
If it shows Error 500 - JHtmlBehavior::mootools not found. This means current framework does not support this update. Need to change the framework
After successful update Joomla version is now 3.1.x.
Note- Many of the errors can occurs Because of your installed component, plugins and modules which are not compatible with joomla 3.x. You Can replace those or you an remove errors.
IMPORTANT-
1-> When updating has completed you may need to refresh your screen or empty your browser cache to adjust for template CSS changes.
2-> Joomla! will notify on your administrator home page (control panel) when an update is needed, but it will not do the update for you. You need to press the button to start the update.
Make sure you have a current backup of your site.
Step2:
PHP 5.3.1 is required for joomla 3.x
Check these in php.ini file.
1. register_globals must be off
2. magic_quotes_gpc must be off
Supported Databases:
1. MySQL (InnoDB support required) 5.1 +
2. MSSQL 10.50.1600.1 +
3. PostgreSQL 8.3.18 +
Supported Web Servers:
1. Apache(with mod_mysql, mod_xml, and mod_zlib) 2.x+
Step3:
The recommended way to upgrade Joomla version is to use the Joomla Update component found in the Components menu of your site Administrator. This will show an update indication. If it is showing joomla is up to date then go to the site maintenance option and clean all cache an purge cache and global checkin. Now refresh the page.
it will show the update indication.
Step4:
Click at this icon you will get this screen .
Step5:
Select Short term support from Update server option and save it. It now show latest joomla version is 3.1.5. Even if it’s not showing 3.1.x then clear all website cache and also go to control panel and click on Updates are available option and purge cache. After that open Joomla update component and it will surely show latest 3.1.x version.
Now click on Install the update option. And wait until the updation process completion. It may take several minutes.
If it shows Error 500 - JHtmlBehavior::mootools not found. This means current framework does not support this update. Need to change the framework
After successful update Joomla version is now 3.1.x.
Note- Many of the errors can occurs Because of your installed component, plugins and modules which are not compatible with joomla 3.x. You Can replace those or you an remove errors.
IMPORTANT-
1-> When updating has completed you may need to refresh your screen or empty your browser cache to adjust for template CSS changes.
2-> Joomla! will notify on your administrator home page (control panel) when an update is needed, but it will not do the update for you. You need to press the button to start the update.
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