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开始前你应该重新查看一下 更新问题已知的升级问题和解决方法 .

打开后台>扩展>更新, Joomla! 更新

If an update is available there will be a message indicating this and a button to press. Which update you'll see depends on the setting for Update Server and caching. See options for Joomla! Update component. The first option shows the latest update of the major release in use. The second option shows the latest update of the latest major. Caching may cause not detecting an available update, purge cache.


Click on the "Install the Update" Button and Allow the Update to Run


When it has completed you may need to refresh your screen or empty your browser cache to adjust for template CSS changes.

Note: Joomla! will notify you 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.

Recommended Steps and actions: It is recommended that you follow these steps when updating a production site:

  1. Back up your site before upgrading to a new version. That way, if something goes wrong during the upgrade process, you can easily restore your site to the earlier version.
  2. Review the release notes for the new version to be familiar with what was changed.
  3. Update using one of the recommended methods outlined in this document. These methods install the new program files, delete unneeded old program files, and update the database as needed for the new Joomla version.
  4. Clear your browser cache and check that the update was successful, using the steps outlined in the Checking Site tab.

Checking Your Site

After an update, it is a good idea to clear your browser cache and check your site to make sure the update was successful. There are two quick checks you can do from the Extension Manager.

扩展管理: 检查数据库

Joomla 2.5 这个功能是添加在版本2.5.0. 它会检查你的Joomla!数据库最近的更新日期

点击扩展管理  数据库. 如果你的数据库是最新的。你应该看到下面的显示信息:





N.B. 如果仍然存在错误,请在mysql中检查确保所有数据库表是正常的。

扩展管理: 发现



If so, you know that any new extensions added during the update were correctly installed in the database.

If there are uninstalled extensions, they will show similar to the following screen:

Discover Screen With One Extension To Install

In this case, check the boxes and click on the Install icon in the toolbar. Joomla will install the extension(s) and then display the screen showing no extensions discovered. At this point, the new extensions have been installed in the database.


If you have any questions before, during or after the upgrade, please ask them on the Migrating and Upgrading to Joomla! 3.x Forum.

If you have problems or errors during the update process, here are some tips.

  • Check the following locations for more information:
  • Clearing your browser cache. There may have been changes to the CSS or Javascript that will need to be reloaded by your Web browser after an upgrade.
  • If any database error messages show after the update, be sure to check the Extension Manager: Database tab followed by the Extension Manager: Discover tab. In some cases, if a database error occurs it will prevent all the database updates from running. In this case, you can run them from the Database tab and then use the Discover→Install method to check and install any new extensions.
  • If you encounter any errors or problems during or after the update, be sure to check the FAQ for the version you updated to. For example, for version 3.1.0, this will be an category entitled Category:Version 3.1.0 FAQ.