You can find the latest stable version (currently 9.0.2 as of early 2026) on the Akeeba Kickstart Download Page . Package Options: Kickstart Core: The standard, free version for most users.
Kickstart will automatically detect the backup file in the same folder.
In your browser, go to yourdomain.com/kickstart.php (or the new name you gave it).
You should only download Kickstart from official sources to ensure the file is secure and hasn't been tampered with.