There are several reasons why fans are desperate for an "updated PDF":
The company sells episodes individually or via monthly subscription passes. Because the series is updated sporadically (sometimes years apart), an "official" final PDF does not exist. Any file claiming to be velamma all episodespdfl updated is likely: velamma all episodespdfl updated
Some online comic repositories and forums maintain archives, though these may not always have the "latest" episodes immediately. There are several reasons why fans are desperate