Here is a complete post summarizing the context and significance of this "BigBlueBox" release:
The leak contains several "interesting" internal tools that were never meant for public release: BigBlueBox (BBB) Tools Here is a complete post summarizing the context
A leaked version of the DevMenu (Internal Build 11.4), which was essentially the "administrative" interface for development units. It allows for the installation of .cia files (Citrus Installable Archives) and system-level management that retail units can't access without modification. Here is a complete post summarizing the context
was a prominent release group famous for leaking official Nintendo development tools and early 3DS game ROMs. Here is a complete post summarizing the context
I compiled it.