On Thursday, Joomla released Joomla 2.5.7 security update. If you are running Joomla 2.5, you should install the 2.5.7 release, but make a complete backup of all your Joomla files and the Joomla database BEFORE you install the update.
I updated one Joomla 2.5.6 site and the update was flawless.
This release of Joomla includes 2 security fixes, 42 bug fixes, and one new feature. For details on the Joomla 2.5.7, click here.
- The new feature allows you to install language packs using the extension manager.
- To update, from the Joomla Administrator menu, select Components > Joomla Upgrade.
- Once the upgrade is installed, you should see the following message: