I see, well I would really appreciate it if someone could look into this for me since I don't have a PS4 to do anything with lol.
I can pm where I got the encrpyted .pkg from if it helps.
Every tool I've tried always asks me for a passcode to decrypt the pkg. Is getting the passcode from the developers the only way to get the passcode or is there some other way? @KiiWii
Well, it turns out I could've just opened the ISO file to see what was in there. I found the .pkg file, but now I don't really know what to do from here. I know that I need to turn it into a fake .pkg, but I'm not sure how to do that.
I tried googling "PS4 IDU - 2019 Summer Refresh - GameStop" to see what would come up and I saw it up on archive.org, so I checked it out and it said that there's an ISO download that's 31.8G. Does that mean anything in particular?