Updating production

hi there
i was wondering what is the best practice to update sc main libraries on the deployed apps?

i miss this option in the deployment dialog, only by the initial deployment you can upload the libraries.
you update sc on dev but it does not update the production, libraries etc

in sc downloads/other you can find the latest production archive, about 300mb, so can i copy only main folders to the deployment environment? i do not use most of third libraries for instance.
the archive PROD folder has several folders: vendor,third, secure, lib, img and cor folders.