On the Downloads / Akeeba Backup page https://www.akeebabackup.com/downloads/akeeba-backup.html you make the following statement:
Akeeba Backup 3.5.2 fixes known issues affecting Akeeba Backup 3.5.1. All users are advised to upgrade.
Akeeba Backup 3.x only supports Joomla! 2.5.1 or later. If you have one of those older versions of Joomla! you can download and install the appropriate version specified in our version compatibility chart.
In the second paragraph I believe you have a slight typo that caused me to stop and wonder for a minute or two.
Please correct me if I'm wrong but I believe the second of those paragraphs should read 3.5.x
Dean
http://www.deanmarshall.co.uk/