Never mind, I created a program to unpack the data and it's working now. Thanks for the tips.
I extracted that packed section at the start (removed the first two bytes), and then I could unpack the data to get the game name. That's all I needed...
@LordxSonk Yes, I have the DLC. It was posted by a "Huk" on a NS release site.
As for update 1.31, it was downloaded from another NS release site, which is very proactive with game updates.
s mentioned, it's not possible to post links in this...