Is it possible to update a game on a PS4 without having internet access?

Yes, but it is highly looked down on by almost everyone in the Pokemon community. Just remember, it is not worth it. It might make all your Pokemon shiny, but...

Yes. You will have to start from the beginning again, but they can get back together.

You need to make a server of your own or have him make his own server. Then you can call and ask him to join his server.

Of course you can't update it, because you aren't online. What you can do is connect to the internet, update Steam, and then display your status as "Offline", even while...

You probably have too many things. You need to delete a couple of things to make space for the app to update.

Click the option button to the right of the center button. Scroll down and select "check application for update." PSN only affects who you can play with, not if you...