I want to try Joomla 4.x

In the documentation for Joomla 3.x to 4.x Step by Step Migration it says:

  1. Select Joomla Next (This is the current text - it may be different in the future) from the drop-down for Update server.
  2. Click Save & Close.

I have done this, but it will only show the latest 3.x version.
What's wrong? What should I do to test the upgrade to 4.x ?


2 Answers 2


You need to wait for 3.10.X to become available; as per the documentation, "This guide assumes you are starting on Joomla 3.10.x. If you are on a earlier version make sure you upgrade to Joomla 3.10 first before moving to Joomla 4."

Joomla 3.10 is currently in development, at 86% completion, most notably, with no completion date for release. V3.10-dev can be found here but is not yet available for updating via the Update process in your current Joomla 3.X installation.


Just an FYI that Joomla 3.10-alpha has now been released so the upgrade process can now easily done.


  1. Go to the Joomla Update Component Options and switch the Update Channel to Testing and the Minimum Stability option to Alpha.
  2. Update to 3.10 alpha1 using the Joomla Update Component.
  3. After you have updated to 3.10 alpha please switch the Update Channel to Custom URL and set the Custom URL to https://update.joomla.org/core/test/310to4_list.xml
  4. After the upgrade please switch back to the Testing Update Channel with the Beta minimum stability to get future updates between Joomla 4 betas.
  • As at 16th July, this didn't work for me and the following error was displayed instead: We can't find a download URL An update to Joomla 4.0.0-rc4 was found, but it wasn't possible to download that update I was able to upgrade to Joomla 4.0.0-rc5-dev using the nightly build Custom URL: update.joomla.org/core/nightlies/next_major_list.xml Jul 16, 2021 at 5:08

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