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I am really not sure what you are talking about. Akeeba Backup 4.x and 5.x are versions from well over 7 years ago which are definitely not compatible with Joomla 4 or 5 (they're not even compatible with half of the Joomla 3.x versions). They are also not even present in our XML update source file.

The current version is 10.0.5.

Were you actually talking about 10.0.4 and 10.0.5?

When talking about version numbers, the convention established since the late 1970s is major.minor.patch (10.0.4), major.minor (10.0), or major (10). If you give me a single number, it's always understood to be the major version.

Giving me just the patch number without any other information to go by, in a message that was most definitely not shown to you as you gave it to me, causes great confusion.

Akeeba Backup 10.0.4 was released on July 4th, 2025 for Joomla 4.4 up to 5.3 and PHP 7.4 to 8.4.

Akeeba Backup 4 was released eleven years ago in September 2014 for Joomla 2.5 up to 3.4 and PHP 5.3 to 5.6.

Akeeba Backup 5 was released nine years ago in May 2016 for Joomla 3.3 up to 3.5 and PHP 5.4 to 7.0.

Once you told me that you're waiting for the next update I finally understood that you meant to say 10.0.4 and 10.0.5 which are very, very different version numbers. Last Thursday I had to reset the CDN cache because it was not serving an update source listing 10.0.5. Obviously, you sent me a ticket about an issue that had happened to you a few days before. Now it makes sense.

Next time, please give me version numbers in the convention used by literally everyone in the past 50 years. It's important for me to understand what you're talking about.

I tried to be polite, but… OK, let's make it very clear, even though it's not at all polite.

When you talk about "Joomla 3" you are talking about all versions of Joomla from 3.0.0 to 3.10.15.

When you talk about "Joomla 3.10" you are talking about all versions of Joomla from 3.10.0 to 3.10.15.

When you talk about "Joomla 3.10.2" you are talking about one specific version of Joomla, namely 3.10.2.

When you talk about Akeeba Backup 4 you are talking about any Akeeba Backup 4.x.y version released 12 to 11 years ago. ABSOLUTELY NOBODY in their right mind will EVER understand that you are talking about Akeeba Backup 10.0.4. Because this is NOT how version numbers work ever since the concept first appeared 50 years ago.

Let me put it a different way. If someone called your house and asked your family members to talk to "Ock" would anyone in your family divine they want to talk to you? No. Why? Because that's not your name, and someone randomly using the last three letters of your last name —something nobody has ever done in any part of the world for the entire run of humankind— is not something anyone in their right mind would expect.\

Do you understand why what you wrote made no sense?

In any case, all you need to do is click on that Check For Updates button. If nothing comes up, something's stuck in Joomla. Just install the new version on top of the old one.