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OverviewEdit

These are titles which provide downloadable content to a specific title. The reason why these titles can only be purchased in game, is because all DLC content is under a set of title(s), downloading via the eShop would download all DLC content. And because all DLC content is under a set of title(s), they are viewed as one(?) title in system settings, and individual DLC can only be deleted from within the game which uses the DLC.

The titleID-low for DLC is: ((uniqueID<<8) | DLC_title_index). DLC_title_index starts at zero. Each DLC item is grouped under a DLC_title_index. Usually an application only has one DLC_title_index, but for applications which have a *lot* of DLC there's more than one DLC_title_index(JPN Home Menu for themes for example).

Every DLC title include NCCH partitions. The first one is always content metadata.

Content metadata structureEdit

The first NCCH partition of a DLC title. It determines region, language and DLC icons. The ExeFS section of content metadata only contains icon section. The RomFS section contains "icons" directory, a MetaDataContentHeader.bin file and some ContentInfoArchive files.

icons directoryEdit

Contains DLC icons (.icn files).

MetaDataContentHeader.binEdit

Offset Size Description
0x0 0x4 Number of disabled DLC
0x4 0x4 Number of enabled DLC
0x8 0x4 Number of .icn files in "icons" directory
0xC 0x4 Company Code
0x10 0x4 Magic number, always 0xDEADBEEF (little endian)
0x14 0x4 * 7 Region data (see below)
0x30 0x4 Number of ContentInfoArchive file (n)
0x34 0x4 * n Region data of ContentInfoArchive files (see below).

Region dataEdit

The first, the second and the third record of the main region data is often assigned to JPN, USA, EUR region respectively.

Offset Size Description
0x0 0x2 Region ID
0x2 0x2 Language ID

Region IDsEdit

ID Region code Region name
0x0 JPN Japan
0x1 USA North America
0x2 EUR Europe
0x3 EUR Australia
0x4 CHN China
0x5 KOR Korea
0x6 TWN Taiwan

Language IDsEdit

ID Language code Language
0x0 ja Japanese
0x1 en English
0x2 fr French
0x3 de German
0x4 it Italian
0x5 es Spanish
0x7 ko Korean
0x8 nl Dutch
0x9 pt Portuguese
0xA ru Russian
0xB zh Traditional Chinese

ExampleEdit

MetaDataContentHeader.bin in Fire Emblem Awakening DLC (EUR):

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  01 00 00 00 19 00 00 00 19 00 00 00 30 00 30 00  ............0.0.
00000010  EF BE AD DE FF FF FF FF FF FF FF FF 02 00 01 00  茂戮.脼每每每每每每每每....
00000020  FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF  每每每每每每每每每每每每每每每每
00000030  08 00 00 00 02 00 01 00 02 00 05 00 02 00 02 00  ................
00000040  02 00 03 00 02 00 04 00 02 00 08 00 02 00 09 00  ................
00000050  02 00 0A 00                                      ....

ContentInfoArchive filesEdit

The name of these files follow this format: ContentInfoArchive_<region code>_<language code>.bin (<region code> and <language code> are determined in MetaDataContentHeader.bin)

Offset Size Description
0x0 0x4 Number of disabled DLC (m)
0x4 0x4 Number of enabled DLC (n)
0x8 0xC8 * (n + m) DLC data (see below)

DLC dataEdit

Offset Size Description
0x0 0x40 Content title (UTF-8)
0x40 0x80 Content description (UTF-8)
0xC0 0x4 .icn file index.
0xC4 0x4 1 if this content is enabled, otherwise 0

ListEdit

TitleID Low Region Description Versions
00008800 JPN New 3DS Internet Browser DLC, used for disabling the web filter. v0
0015D800 USA IronFall Invasion [DLC] Unknown
00022800 EUR StreetPass Mii Plaza [DLC] v5
00068300 ? ? v0, v256
00072000 ? ? v0, v128
00072A00 ? ? v0
00078200 ? ? v0, v64
0007AD00 JPN New SUPER MARIO BROS. 2 [DLC] v16, v48
0007AE00 USA New SUPER MARIO BROS. 2 [DLC] v16, v48
0007AF00 EUR New SUPER MARIO BROS. 2 [DLC] v0 (may never have existed), v16, v48
000B8900 KOR New SUPER MARIO BROS. 2 [DLC] v16
00084F00 ? ? v0, v80
0008CC00 ? ? v0, v16
00090E00 ? ? v0
00091600 ? ? v0, v16
00095100 ? ? v0, v16
00095700 ? ? v0, v96
00095800 ? ? v0, v32, v48
0009AB00 ? ? v0
0009AC00 ? ? v0
0009AD00 ? ? v0
0009AE00 ? ? v0
000A4D00 ? ? v0

ToolsEdit