In all cases - uploading using the Extension Manager, installing from a Directory, or using Akeeba's internal update function - the update fails.
When updating from an upload or dir. install using the extensions manager, the error is:
JInstaller: :Install: Cannot find XML setup file
When updating from within Akeeba itself, the error is:
Downloading the update package failed. Make sure that your temp-directory is writable or that you have enabled Joomla!'s FTP options in your site's Global Configuration.
I have verified my Akeeba ID, and also re-downloaded the ZIP file to make sure it is not corrupt.
I have a site that is not being used, if you'd like to log in and take a closer look.