I'm pretty sure they're both using the same links: cdn and pkgj. the way to get the links is with a proxy. the only thing that's going to change is how you access them. sony is the most incompetent of the big three when it comes to anything online. however, like with any system, someone has to buy the content to get the link and the license. there's a logic to updates, which we can get regardless, but base games are random alphanumerics. afaik, there's no way to bruteforce them unless you want to wait thousands, if not millions, of years due to shear number of combinations.