Good text but links in pdf are broken/nonexisting.

>>I'd like to add new funkcionality to my program. When user run program, program check if exists new version (which is saved somewhere on ftp server or something else), and if so, download new version, maybe alter some tables, copy new reports... After that, I need information that user downloaded new version successfuly for my documentation.
>>How can I do that?
>
>https://doughennig.com/papers/Pub/Deploying.pdf, see page 24.