To update an extension in Joomla 2.5:
- Log into your Joomla 2.5 admin
- In the top menu, hover over Extensions and then click Extension Manager.
- You will see several tabs at the top of the page. Click the Update tab.
- There may not always be updates available. If there are, you will see a list of them on the screen. As you can see in the screenshot below, our Joomla 2.5 website has two akeeba backup upgrades available.
To install an update, click the box to the left of each update you want to install. Then, click the Update button in the top right menu.
When the upgrades have been completed, you will see a success message similar to:
Updating component was successful.
If you get any error messages, you may want to try running each upgrade one at a time, instead of selecting all the available upgrades and installing them at the same time.