My Book World Edition II

Hi everyone, I was given a HD My Book World II Edition (white light) on which the previous owner had installed debian and could not longer access via the web.
In fact, I can connect to HD via ssh but I can’t longer access the web interface.
Through WINScp I was able to verify that the contents of the hard disk remained intact, so that for now I’m making a copy of the folders contained in the HD, just to save the saveable.
I looked for some help on the net on how to “resume” the My Book in question and I read about a feature pack to install that I could download on the site, site that, however, is now down.
Can you tell me where I can find this feature pack or, alternatively, how can I reinstall the original firmware on the HD?
Thanks a lot and bye