Either an Xbox 360 or PS3 (unlikely due to restriction) save file which has been loaded post character creation and received the DLC. While we already know all the item IDs, it's not enough to access DLC or warp bonfires. If you have access, it would be a big help in figuring out how it works
Yes but that's just an item in the inventory and is more or less there for people to look at and see they bought the DLC. The important stuff happens elsewhere (if it's like PC version). Adding the DLC item will get you nothing but seeing a savefile with the DLC bought and loaded legitimately will show everything.
I can't see that. It looks like your extracted save file has licenses? The way the PC version works is that there is license files in the folder, the game checks for them, and then gives you certain items and changes your save file (not just the inventory, but other places as well) to reflect the license status. I can't tell what I'm looking at though