Joomla! Documentation™

Please note!

Updating to Joomla 3.5 can no longer be done through the extension manager.

You must now update through the Joomla! Update component (or by manual action as indicated below).

Before updating, always take a backup and don’t forget to test it.

Joomla! 

3.x

Update by using the Joomla! Update component (recommended)

Preferably you update your Joomla! Installation by using the Joomla! Update component
If you don't know how to use the Joomla! update component, please see: Joomla! Update Component.

Caveat!

Update when you can't use the Joomla! Update component

If you can’t update your Joomla! Installation using the Joomla! Update component because of hosting limitations or connection issues then you will need to follow these steps:

Note Clicking the "Update URL" link in Components → Joomla Update allows the browser to by-pass the server and directly download the correct update package.

1. Method A
   1. Go to Components → Joomla Update. Click the "Update url" link and save the update package to your computer.
   2. Go to Components → Joomla Update →  Upload & Update tab
   3. Browse to the file then Upload & Install
2. Method B
   1. Go to Components → Joomla Update. Click the "Update url" link and save the update package to your computer.
   2. Copy the update package (that you just downloaded) to the sites /tmp folder (note the path is set in the Joomla Global Configuration - make sure it's in the correct directory)
      (N.B. this method only works with the update package that the Joomla! Update component discovers. It will not work for other update packages or the Joomla full package. It also requires an internet connection to the Joomla Update XML file).
   3. Go to Components → Joomla Update. The Joomla! Update component will use the update package from your /tmp folder.
3. Method C
   Only use this method if method A and method B fail:
   1. Download the update package from https://downloads.joomla.org
   2. Extract the download package on your computer
   3. Using your favorite FTP software, upload the folders and files at the root of the website or in the folder where your Joomla! installation is located. (NOTE: If you are using Filezilla, click on "Replace" for all, if you are using WinSCP, click on upload and then allow override for all. The FTP software will overwrite the existing files and add the new ones.)
   4. Please see https://gist.github.com/mbabker/d7bfb4e1e2fbc6b7815a733607f89281

Resources

See also: Updating from an existing version.