Quick research from header's get:
From GET path: 0005000010133600/0000000B
The first, it's TitleId: 0005000010133600
And the second, the contentId: 0000000B
Because, if u set a title that exists, but a wrong content, they show's a 404 and not 401:
Ex:
http://ccs.cdn.wup.shop.nintendo.net/ccs/download/0005000010134200/0000000F
And the tool maybe has more content (Try 0000000C, 000000D, 000000F...) ¿when download thats?