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This page describes the format and encryption of extdata, "extra data" stored on [[SD_Filesystem|SD card]] and [[Flash_Filesystem|NAND]].
+
This page describes the format and encryption of extdata, "extra data" stored on SD card and NAND, at:
At:
  −
* nand/data/<ID>/extdata/<ExtdataID-High>
  −
* sdmc/Nintendo 3DS/<ID0>/<ID1>/extdata/<ExtdataID-High>
     −
(ExtdataID-High is always 00000000 for SD, and always 00048000 for NAND) Some titles can have Quota.dat stored in these directories. The directory-name for these directories is the ExtdataID-Low. Then there's a sub-directory 00000000, which contains the actual extdata. Size and number of files in this dir varies per title.
+
* <code>nand/data/&lt;ID&gt;/extdata/&lt;ExtdataID-High&gt;</code>
NAND stores the shared extdata and is structured exactly the same way, see [[Flash Filesystem]].
+
* <code>sdmc/Nintendo 3DS/&lt;ID0&gt;/&lt;ID1&gt;/extdata/&lt;ExtdataID-High&gt;</code>
   −
Extdata image 00000001 contains a VSXE partition for the FST, the actual file data is stored in the subsequent extdata images.
+
ExtdataID-High is always 00000000 for SD, and always 00048000 for NAND. Regular apps can only mount SD extdata using the same extdataID which is stored in the CXI exheader. Therefore, regular apps which have the exheader extdataID set to zero can't use extdata. This restriction doesn't apply for shared extdata with extdataID high bitmask 0x48000 stored on NAND. System apps with a certain access right can mount arbitrary extdata. All NAND extdata is shared extdata, while all SD extdata is normal extdata.
   −
Regular apps can only mount SD extdata using the same extdataID which is stored in the [[NCCH#CXI|CXI]] exheader. Therefore, regular apps which have the exheader extdataID set to zero can't use extdata. This restriction doesn't apply for shared extdata with extdataID high bitmask 0x48000 stored on NAND. System apps with a certain access right can mount arbitrary extdata.
+
All data in this page is little-endian. All &quot;unused / padding&quot; fields can contain uninitialized data unless otherwise specified.
All NAND extdata is shared extdata, while all SD extdata is normal extdata. Thus, normal extdata doesn't exist on NAND, and shared extdata doesn't exist on SD. The extdataID high excluding that bitmask is always zero for shared extdata.
     −
=== Encryption ===
+
= Format =
   −
These files are [[AES|encrypted]] with AES-CTR, the keyslot is initialized by [[nand/private/movable.sed|movable.sed]]. The same keyslot is used for the NAND/SD extdata MAC. The NAND extdata images are stored in cleartext. The WCHAR LowPath "/extdata/<ExtdataIDHigh>/<ExtdataIDLow>/<PathToImage>" text path is hashed with SHA-256, including the WCHAR null-terminator. A separate hash is used for Quota.dat. The base CTR seems to be then generated by XORing the calculated hash: CTRword[i] = Hashword[i] ^ Hashword[4+i].
+
To avoid confusion, the terms '''device directory / file''' and '''virtual directory / file''' are used with the following meanings:
   −
The base CTR is fixed therefore the CTR never changes after each write. Thus it is possible to obtain some cleartext by XORing one file(like newly created extdata) with a newer file, where the newer file overwrote zeros in the original file with non-zero data.
+
* '''Device directory / file''' are the real directory / file stored on SD / NAND that can be seen under path <code>nand/data/&lt;ID&gt;/extdata/</code> or <code>sdmc/Nintendo 3DS/&lt;ID0&gt;/&lt;ID1&gt;/extdata/</code>.
 +
* '''Virtual directory / file''' are directory / file stored inside extdata virtual file system, which can be seen by applications in the mounted extdata archives.
   −
=== Format ===
+
An extdata consists of several device directories and files, which forms a file system consisting of multiple virtual directories and files.
   −
Extdata uses dual 'partitions' of IVFC hash trees to store data. The order of data in Extdata is as follows:
+
An extdata with ID <code>ExtdataId</code> has the following device files:
   −
* AES MAC
+
* <code>.../extdata/&lt;ExtdataID-High&gt;/&lt;ExtdataId-Low&gt;/Quota.dat</code> (optional)
* DIFF Header
+
* <code>.../extdata/&lt;ExtdataID-High&gt;/&lt;ExtdataId-Low&gt;/&lt;SubDirID&gt;/&lt;SubFileID&gt;</code>
* Secondary DIFI Partition descriptor
  −
* Primary DIFI Partition descriptor
  −
* Secondary Partition IVFC Hash Tree
  −
* Primary Partition IVFC Hash Tree
     −
Only one Partition is active at a given time, this is determined by the DIFF header. Normally the 'data' contained in extdata is stored at level4 of the IVFC hash tree, and hence there are two versions of the 'data' stored in the Extdata image (although only one is 'active'). However if DIFI flags[0] is set, this indicates it is a DATA partition and the 'data' is stored outside the IVFC hash tree, at a relative offset defined by the DIFI partition (in this case there will be only one version of the 'data' stored in the Extdata image).
+
Note:
   −
==== Chain Of Trust ====
+
* All device files are [[DISA and DIFF|DIFF containers]]. '''All format description below is about the inner content of the containers'''. Please unwrap these files first according to the DIFF format description before reading them using the extdata format description below.
 +
* <code>Quota.dat</code> is only observed existing for NAND shared extdata.
 +
* <code>&lt;SubDirID&gt;</code> and <code>&lt;SubFileID&gt;</code> are 8-digit hex strings.
 +
* Device file with <code>SubDirID = SubFileID = 00000000</code> doesn't exist. Other ID combinations can exists.
 +
* Device file with <code>SubDirID = 00000000</code> and <code>SubFileID = 00000001</code> is the VSXE metadata file and must exist.
 +
* Other files, besides <code>Quota.dat</code> and <code>00000000/00000001</code>, are normal sub files, are these device files one-to-one correspond to virtual files. They contain raw virtual file data in the DIFF inner content.
 +
* <code>SubDirID = 00000000</code> is usually the only one device directory that can be seen. See [[#Device Directory Capacity]] for more information.
   −
The chain of trust in extdata is as follows:
+
== Quota File ==
   −
* MAC verifies DIFF Header
+
The inner data of <code>Quota.dat</code> is 0x48 bytes with the following format. The file seems to limit the extdata total size.
* DIFF Selects and verifies via Active DIFI partition descriptor
  −
* Active DIFI partition descriptor points to the location of active IVFC tree (and data if applicable), and provides the hash blob to verify Level 1 of the IVFC hash tree
  −
* Each IVFC level verifies the next level, until Level 4(data).
     −
=== Filesystem ===
+
{| class="wikitable" border="1"
 
+
! Offset
Title extdata contains a series of extdata images which comprise an independent file system. The first image (00000001) contains the VSXE (FST) partition, and subsequent images each containing a single file. Other extdata images, such as Quota.dat and [[Title Database|database extdata]], exist independent of a FS.
  −
 
  −
==== VSXE ====
  −
{| class="wikitable"
  −
|-
  −
! Start
   
! Length
 
! Length
 
! Description
 
! Description
 
|-
 
|-
| 0x0
+
| 0x00
 +
| 4
 +
| Magic &quot;QUOT&quot;
 +
|-
 +
| 0x04
 
| 4
 
| 4
| Database Magic ("VSXE")
+
| Magic 0x30000
 
|-
 
|-
| 0x4
+
| 0x08
 
| 4
 
| 4
| Magic Number (0x30000)
+
| 0x1000, block size
 
|-
 
|-
| 0x8
+
| 0x0C
| 8
+
| 4
| Data Table Offset
+
| Always 126. Probably device directory capacity. See the [[#Device Directory Capacity]] more information.
 
|-
 
|-
 
| 0x10
 
| 0x10
| 8
+
| 4
| File Size, divided by the value at 0x18
+
| Always 0?
 +
|-
 +
| 0x14
 +
| 4
 +
| Max number of blocks
 
|-
 
|-
 
| 0x18
 
| 0x18
| 8
+
| 4
| Usually 0x1000
+
| Always 0?
 +
|-
 +
| 0x1C
 +
| 4
 +
| Free blocks remained
 
|-
 
|-
 
| 0x20
 
| 0x20
| 8
+
| 4
| Unknown
+
| Always 0?
 +
|-
 +
| 0x24
 +
| 4
 +
| Always 0?
 
|-
 
|-
 
| 0x28
 
| 0x28
 
| 4
 
| 4
| 'Action' made on most recently mounted Extdata image
+
| Free blocks remained + (blocks occupied by the recently mounted file, specified by the ID below (0 if recently deleted))
 
|-
 
|-
 
| 0x2C
 
| 0x2C
 
| 4
 
| 4
| Unknown
+
| Always 0?
 
|-
 
|-
 
| 0x30
 
| 0x30
 
| 4
 
| 4
| ID of most recently mounted Extdata image
+
| ID of most recently mounted file. Same as the one in [[Inner_FAT#Filesystem Header]]
 
|-
 
|-
 
| 0x34
 
| 0x34
 
| 4
 
| 4
| Unknown
+
| Always 0?
 
|-
 
|-
 
| 0x38
 
| 0x38
| 0x100
+
| 4
| Mount path, from most recently mounted Extdata image
+
| Always 0?
|}
  −
 
  −
Data Table:
  −
 
  −
{| class="wikitable"
   
|-
 
|-
! Start
+
| 0x3C
! Length
+
| 4
! Description
+
| Always 0?
 
|-
 
|-
| 0x0
+
| 0x40
| 0x38
+
| 4
| Unknown
+
| Size in bytes of most recently mounted file (device file size). 0 if recently deleted
|-
  −
| 0x38
  −
| 8
  −
| Folder Table Offset
  −
|}
  −
 
  −
===== Folder Table =====
  −
 
  −
Header:
  −
{| class="wikitable"
   
|-
 
|-
! Start
+
| 0x44
! Length
  −
! Description
  −
|-
  −
| 0x0
  −
| 0x4
  −
| Equivalent to the Used Folder Entries + 1;
  −
|-
  −
| 0x4
   
| 4
 
| 4
| Equivalent to the Maximum Folder Entries + 1;
+
| Always 0?
|-
  −
| 0x8
  −
| 0x20
  −
| Unused
   
|}
 
|}
   −
Folder Entry:
+
== Device Directory Capacity ==
{| class="wikitable"
  −
|-
  −
! Start
  −
! Length
  −
! Description
  −
|-
  −
| 0x0
  −
| 0x4
  −
| Parent Folder Index
  −
|-
  −
| 0x4
  −
| 0x10
  −
| Folder Name
  −
|-
  −
| 0x14
  −
| 0x4
  −
| Unknown
  −
|-
  −
| 0x18
  −
| 0x4
  −
| Last Folder Index Entry
  −
|-
  −
| 0x1C
  −
| 0x4
  −
| Last File Index Entry
  −
|-
  −
| 0x20
  −
| 0x4
  −
| Unknown
  −
|-
  −
| 0x2C
  −
| 0x4
  −
| Unknown
  −
|}
  −
* The folder id/index for the current entry is related to it's position in the Folder table. The folder table is accessed like an array of 0x28 byte chunks, with the header consuming index = 0, root directory at index = 1, and the subsequent folder entries following.
     −
===== File Table =====
+
A device directory in an extdata (a <code>&lt;SubDirID&gt;</code> directory) seems to have a maximum number of device files it can contain. For SD extdata, this maximum number seems to be hard-coded as 126. For NAND extdata, the number is probably indicated by a field in Quota.dat, which is, again, always 126 as observed. 3DS FS tries to put all device files in the device directory <code>00000000</code> if possible, and only when more than 126 files needed to add, a second device directory <code>00000001</code> and so on are created. However, few extdata have such amount of files to store, so the behavior lacks of use cases to confirm.
   −
The location of the File table is calculated by aligning the end offset of the folder table to 0x1000 bytes.
+
The number 126 is probably from some kind of other capacity of 128 with <code>&quot;.&quot;</code> and <code>&quot;..&quot;</code> entries reserved. It is theorized that this is to keep a FAT directory table, with 0x20 bytes for each entry, in one 0x1000 cluster. The motivation is unclear.
   −
Header:
+
== VSXE Filesystem ==
{| class="wikitable"
  −
|-
  −
! Start
  −
! Length
  −
! Description
  −
|-
  −
| 0x0
  −
| 0x4
  −
| Equivalent to the Used File Entries + 1;
  −
|-
  −
| 0x4
  −
| 4
  −
| Equivalent to the Maximum File Entries + 1;
  −
|-
  −
| 0x8
  −
| 0x28
  −
| Unused
  −
|}
     −
Folder Entry:
+
This is one variant of the [[Inner FAT|FAT filesystem]]. Please refer to its page for the description of the filesystem. In general, device file <code>00000000/00000001</code> contains the metadata of the filesystem, while other device files (except for the Quota file) contains normal sub-files
{| class="wikitable"
  −
|-
  −
! Start
  −
! Length
  −
! Description
  −
|-
  −
| 0x0
  −
| 0x4
  −
| Parent Folder Index;
  −
|-
  −
| 0x4
  −
| 0x10
  −
| File Name;
  −
|-
  −
| 0x14
  −
| 0x4
  −
| Unknown
  −
|-
  −
| 0x18
  −
| 0x4
  −
| Unknown
  −
|-
  −
| 0x1C
  −
| 0x4
  −
| Unknown
  −
|-
  −
| 0x20
  −
| 0x8
  −
| Unique Extdata ID
  −
|-
  −
| 0x28
  −
| 0x4
  −
| Unknown
  −
|-
  −
| 0x2C
  −
| 0x4
  −
| Unknown
  −
|}
  −
* The file id/index for the current entry is related to it's position in the File Table, much like the folder entries in the Folder Table. The file table is accessed like an array of 0x30 byte chunks, with the header consuming index = 0, and the subsequent file entries following. The relationship between the index value of the file entry, and the actual file name of the extdata image that contains it it = index+1. For instance icon (the only file in every extdata), comes right after the header, with an index value of '1', and the icon is stored in extdata image '00000002'.
  −
 
  −
* The Unique Extdata ID, is the same value found in the DIFF header of the referenced extdata image for that file. The value changes most times the file in question is modified. When mounting an extdata image in the VSXE filesystem, if the file's extdata image doesn't have the expected Unique Extdata ID, it won't be mounted.
     −
==== VSXE Filesystem structure ====
+
Each non-dummy file entry corresponds to a device file. The path to the device file is generated by the following computation:
   −
When extdata is created, these are *always* created regardless of whether the title actually uses them.
+
<pre>// See previous section about this capacity
 +
const uint32_t device_dir_capacity = 126;
   −
* /icon This file contains the extdata [[SMDH|icon]] displayed in data management. This icon can only be written to by titles when creating extdata, titles would have to recreate extdata to change the icon. This file can't be read directly, instead it is read via [[FS:ReadExtSaveDataIcon]].
+
// entry index is the index in the file entry table, with the first dummy entry as
* /user/ Contains the title's actual extdata files.
+
// index = 0, which is never used for a real file.
* /boss/ Can contain [[SpotPass]] content. SpotPass content can only be downloaded to this /boss directory.
+
// file_index = 1 is reserved for the VSXE Filesystem Metadata itself, so real files
 +
// started from file_index = 2.
 +
uint32_t file_index = entry_index + 1;
   −
User extdata and SpotPass extdata use separate [[FS:OpenArchive|mount]] points at /user and /boss. Therefore one mount can't access the other directory, and also can't access /icon.(The title's SpotPass extdata can be mounted by the title itself, if it uses SpotPass)
+
uint32_t SubDirID = file_index / device_dir_capacity;
 +
uint32_t SubFileID = file_index % pdevice_dir_capacity;
    +
char extdata_path[...]; // &quot;.../extdata/&lt;ExtdataID-High&gt;/&lt;ExtdataId-Low&gt;&quot;
 +
char device_path[...]; // output path
 +
sprintf(device_path, &quot;%s/%08x/%08x&quot;, extdata_path, SubDirID, SubFileID);
 +
</pre>
 +
When mounting extdata, the unique identifier is used to match the ID stored in subfile's [[DISA and DIFF#DIFF header|DIFF header]]. If the ID doesn't match, mounting will fail.
   −
Other optional but notable directories include:
+
== Virtual File System Structure ==
* /user/ExBanner This directory can optionally store [[Extended_Banner| extended banners]]. When this is available, this banner is displayed instead of the [[CXI]] ExeFS banner. COMMON.bin stores the common exbanner, while <regionlang_code>.bin stores an optional separate region/language specific banner.(regionlang_code can be "JPN_JP", "USA_EN", etc)
     −
=== Extdata without an independent FS ===
+
When extdata is created, these are ''always'' created regardless of whether the title actually uses them.
   −
==== Quota.dat ====
+
* <code>/icon</code> This virtual file contains the extdata icon displayed in data management. This icon can only be written to by titles when creating extdata, titles would have to recreate extdata to change the icon. This file can't be read directly, instead it is read via FS:ReadExtSaveDataIcon.
 +
* <code>/user/</code> This virtual directory contains the title's actual extdata files.
 +
* <code>/boss/</code> This virtual directory can contain SpotPass content. SpotPass content can only be downloaded to this <code>/boss</code> virtual directory.
   −
* This is contained in the Quota.dat extdata image.
+
User extdata and SpotPass extdata use separate mount points at <code>/user</code> and <code>/boss</code>. Therefore one mount can't access the other virtual directory, and also can't access <code>/icon</code>.(The title's SpotPass extdata can be mounted by the title itself, if it uses SpotPass)
   −
{| class="wikitable"
+
Other optional but notable directories include:
|-
  −
! Start
  −
! Length
  −
! Description
  −
|-
  −
| 0x0
  −
| 4
  −
| Magic ("QUOT")
  −
|-
  −
| 0x4
  −
| 4
  −
| Magic Number (0x30000)
  −
|-
  −
| 0x8
  −
| 8
  −
| Unknown
  −
|-
  −
| 0x10
  −
| 0x38
  −
| Unknown
  −
|}
  −
It's unknown what this is used for.
  −
 
  −
==== Database Extdata ====
     −
See [[Title Database|here]].
+
* <code>/user/ExBanner</code> This virtual directory can optionally store extended banners. When this is available, this banner is displayed instead of the CXI ExeFS banner. <code>COMMON.bin</code> stores the common exbanner, while <code>&lt;regionlang_code&gt;.bin</code> stores an optional separate region/language specific banner.(regionlang_code can be &quot;JPN_JP&quot;, &quot;USA_EN&quot;, etc)
   −
=== SD Extdata ===
+
== SD Extdata ==
 
Usually the ExtdataID low is in the format '00<Unique ID>'
 
Usually the ExtdataID low is in the format '00<Unique ID>'
   Line 301: Line 172:  
| 0000008f
 
| 0000008f
 
| 00000098
 
| 00000098
| Homemenu extdata, this contains home-menu savedata and cached icons for applications.
+
| [[Home Menu]] extdata, this contains home-menu savedata and cached icons for applications.
 
|  
 
|  
 
|-
 
|-
Line 313: Line 184:  
| 00000217
 
| 00000217
 
| 00000227
 
| 00000227
| Mii Maker, contains an ExBanner
+
| [[Mii Maker]], contains an ExBanner
 
| [https://dl.dropbox.com/u/20520664/extdata00000217.zip cleartext]
 
| [https://dl.dropbox.com/u/20520664/extdata00000217.zip cleartext]
 
|-
 
|-
 
| 00000208
 
| 00000208
| 00000217
+
| 00000218
 
| 00000228
 
| 00000228
 
| Streetpass Mii Plaza
 
| Streetpass Mii Plaza
Line 325: Line 196:  
| 00000219
 
| 00000219
 
| 00000229
 
| 00000229
| eShop
+
| [[eShop]], contains store music in AAC format.
 +
|
 +
|-
 +
| 0000020b
 +
| 0000021b
 +
| 0000022b
 +
| Nintendo Zone
 
|  
 
|  
 
|-
 
|-
Line 334: Line 211:  
|  
 
|  
 
|-
 
|-
| 0000020b
+
| 000002cc
| 0000021b
+
| 000002cd
| 0000022b
+
| 000002ce
| Nintendo Zone
+
| [[Home Menu]] theme
 
|  
 
|  
 
|-
 
|-
Line 347: Line 224:  
|  
 
|  
 
|-
 
|-
|?
+
|00000306
 
|00000308
 
|00000308
 
|00000307
 
|00000307
Line 359: Line 236:  
|  
 
|  
 
|-
 
|-
| ?
+
| 00000326
 
| 00000326
 
| 00000326
 
| 00000326
 
| 00000326
Line 396: Line 273:  
|-
 
|-
 
| ?
 
| ?
 +
| 00000517
 +
| 00000518
 +
| Swapnote
 +
|
 +
|-
 +
| 0000055d
 +
| 0000055d
 +
| 0000055d
 +
| Pokémon X<br>Pokémon Y
 +
|
 +
|-
 
| ?
 
| ?
 +
| 00000725
 +
| 00000724
 +
| Ambassador Certificate
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 000007af
 +
| New Super Mario Bros. 2
 +
|
 +
|-
 +
| ?
 +
| 00000863
 +
| 00000864
 +
| Animal Crossing: New Leaf
 +
|
 +
|-
 +
| ?
 +
| 00000a85
 
| 00000a86
 
| 00000a86
| Professor Layton and the Miracle Mask
+
| Professor Layton and the Miracle Mask<br>Professor Layton and the Azran Legacy
 +
German Version ExtdataID is 00000a87
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00000b4f
 +
| Fullblox / Crashmo
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00000ba9
 +
| Pokémon Mystery Dungeon: Gates to Infinity
 
|  
 
|  
 
|-
 
|-
Line 407: Line 327:  
|  
 
|  
 
|-
 
|-
| ?
+
| 00000c73
 
| 00000c73
 
| 00000c73
 
| 00000c73
 
| 00000c73
Line 416: Line 336:  
| ?
 
| ?
 
| 00000d9a
 
| 00000d9a
| Donkey Kong Country Returns 3d Trailer
+
| Donkey Kong Country™<br>Returns 3D: Trailer
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00000ea6
 +
| Etrian Odyssey IV
 +
|
 +
|-
 +
| ?
 +
| 00000edf
 +
| 00000ee0
 +
| Super Smash Bros. for Nintendo 3DS
 +
|
 +
|-
 +
| ?
 +
| 00000f14
 +
| 00000f1e
 +
| Phoenix Wright: Ace Attorney - Dual Destinies
 +
|
 +
|-
 +
| ?
 +
| 00001007
 +
| 00001005
 +
| Professor Layton vs Phoenix Wright: Ace Attorney
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00001062
 +
| Nintendo Pocket Football Club
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 0000111c
 +
| Yoshi's New Island
 +
|
 +
|-
 +
| ?
 +
| 00001132
 +
| 00001131
 +
| Fantasy Life
 +
|
 +
|-
 +
| 000011c5
 +
| 000011c5
 +
| 000011c5
 +
| Pokémon Omega Ruby<br>Pokémon Alpha Sapphire
 +
|
 +
|-
 +
| ?
 +
| 000012c8
 +
| 000012ca
 +
| Mario vs. Donkey Kong: Tipping Stars
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00001499
 +
| Korg DSN-12
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 000014f2
 +
| Animal Crossing: Happy Home Designer
 +
|
 +
|-
 +
| 000014d1
 +
| 000014d1
 +
| 000014d1
 +
| [[Home Menu]] badge
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00001632
 +
| Fullblox / Stretchmo
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00001646
 +
| Pokémon Rumble World
 +
|
 +
|-
 +
| 00001648
 +
| 00001648
 +
| 00001648
 +
| Pokémon Sun<br>Pokémon Moon
 +
|
 +
|-
 +
| 0000165c
 +
| 0000165c
 +
| 0000165c
 +
| [[Home Menu]] saved theme layouts
 +
|
 +
|-
 +
| 000016C6
 +
| ?
 +
| 00001678
 +
| Yo-kai Watch
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 000018fa
 +
| Phoenix Wright: Ace Attorney - Spirit of Justice
 +
|
 +
|-
 +
| ?
 +
| 0000198e
 +
| 0000198f
 +
| Animal Crossing: New Leaf - Welcome amiibo
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00001a05
 +
| Super Mario Maker
 +
|
 +
|-
 +
| ?
 +
| ?
 +
| 00001a2e
 +
| Swapdoodle
 
|  
 
|  
 
|}
 
|}
   −
=== NAND Shared Extdata ===
+
== NAND Shared Extdata ==
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
 
!  ExtdataID
 
!  ExtdataID
 
!  Description
 
!  Description
 +
|-
 +
| 0xe0000000
 +
| Home Menu attempts to open this archive during boot, if [[FS:OpenArchive]] doesn't return an error Home Menu seems to then launch the [[System Transfer]] application. Home Menu doesn't actually use this archive at all except for checking whether it exists.
 
|-
 
|-
 
|  0xf0000001
 
|  0xf0000001
Line 433: Line 482:  
|-
 
|-
 
|  0xf0000009
 
|  0xf0000009
?
+
Used for [[BOSS_Services|SpotPass]] content storage for [[News_Services|notifications]].
 
|-
 
|-
 
|  0xf000000b
 
|  0xf000000b
Line 442: Line 491:  
|-
 
|-
 
|  0xf000000d
 
|  0xf000000d
?
+
Home Menu SpotPass content data [[BOSS_Services|storage]].
 +
|-
 +
|  0xf000000e
 +
|  Contains [[VersionList|versionlist.dat]], used by Home Menu for the software update notification added with [[7.0.0-13]].
 +
|}
 +
 
 +
==== Shared Extdata 0xf000000b gamecoin.dat ====
 +
{| class="wikitable" border="1"
 +
|-
 +
!  Offset
 +
!  Size
 +
!  Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| Magic number: 0x4F00
 +
|-
 +
| 0x4
 +
| 0x2
 +
| Total Play Coins
 +
|-
 +
| 0x6
 +
| 0x2
 +
| Total Play Coins obtained on the date stored below. When the below date does not match the current date, this field is reset to zero, then the date(and other fields) are updated. Once this value is >=10, no more Play Coins can be obtained until the current date changes.
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Total step [[PTM:GetTotalStepCount|count]] at the time a new Play Coin was obtained.
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Step count for the day the last Play Coin was obtained, for that day's step count(same as the step count displayed by home-menu when this file was updated).
 +
|-
 +
| 0x10
 +
| 0x2
 +
| Year
 +
|-
 +
| 0x12
 +
| 0x1
 +
| Month
 +
|-
 +
| 0x13
 +
| 0x1
 +
| Day
 
|}
 
|}
   −
=== Tools ===
+
The above date stores the last time new Play Coin(s) were obtained. The contents of this file is updated by home-menu. [[PTM:GetTotalStepCount]] is not checked constantly, after home-menu boot this is only checked when waking from sleep-mode. Each time home-menu updates the contents of this file, home-menu will set the Play Coin total to 300 if it's higher than the 300 Play Coin limit.
 +
 
 +
[[Home Menu]] loads this file / opens this archive during [[Home Menu|startup]]. When accessing this file fails, like when the file/archive is corrupted(or at least on older system-versions), the result is a brick due to Home Menu using [[SVC|svcBreak]]. [[User:Yellows8|Yellows8]] bricked a 3DS this way due to corruption via invalid [[FSFile:Write]] flush flags. When opening this extdata archive(0xf000000b) fails, Home Menu executes svcBreak.
 +
 
 +
==== Shared Extdata 0xf000000b ubll.lst ====
 +
List of blocked users.
 +
 
 +
Empty space is filled with 0xC-long sequences of 00 00 ... 07
   −
* [https://github.com/ps3hen/ctr_toolkit/tree/master/extdata_tool extdata_tool] - Extract/verifies standalone extdata images and title extdata FS.
+
== Tools ==
 +
* [https://github.com/wwylele/3ds-save-tool 3ds-save-tool] - Extract/verifies extdata
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