WooCommerce – Is is possible to replace downloadable file and allow existing customer to get it?

I have a WooWommerce 2.0 shop where I sell downloadables and, from time to time, I have to replace existing files with newer versions. When I replace the file URLs for the downloadable files, Customers who already purchased them earlier cannot get the latest version by following the link they received with their order, receiving a “No File Defined” error instead.

Is there a way to ensure that the link received with an order always grants access to all the files defined for the Downloadable Product, no matter what they are? Alternatively, would there be a way to send updated links to existing Customers?

Thanks in advance for the answers.

Wherever the actual file is, you should be able to FTP to it and simply replace it with a file with the exact same name. Unless Woocommerce keeps some kind of filesize account of what is there, it shouldn’t know the difference as to whether it is delivering the old file or the new file.