There's no downgrade path but you can try the following.
Delete the following:
- The entire components/com_akeeba fodler
- The contents of the administrator/components/com_akeeba EXCEPT FOR the following files and folders:
- administrator/components/com_akeeba/BackupEngine/serverkey.php — This is the settings encryption key. If you delete it your settings will be corrupt.
- administrator/components/com_akeeba/backup — This is where logs and backup archives are stored by default.
It's best to keep a copy of the aforementioned file and folder before starting deleting stuff.
DO NOT try to uninstall the Akeeba Backup package or the component.
Install the older version on top of your current version.
Extract the older version's ZIP file. There is a file called lib_fof30.zip in it. Extract this file. You have just extracted a folder called fof. Rename it to fof30.
Delete the libraries/fof30 folder from your site. Upload the fof30 folder into the libraries folder of your site.
Note that Admin Tools MIGHT not work properly and will have to be downgraded by installing an older version of the same vintage as your Akeeba Backup version.
Nicholas K. Dionysopoulos
Lead Developer and Director
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