Mii
Originally created for the Nintendo Wii (and backported to a selection of DS/i games), the Mii format was expanded with a larger selection of facial features and a new "copying" permission for the 3DS family, and later implemented as-is on Wii U.
See Mii Maker for the application chiefly designed to create, edit, delete, and trade Miis or convert them from and to a QR code.
Mii Database
Format of the Mii main database CFL_DB.dat, found in shared extdata archive f0000000b.
| Offset | Length | |
|---|---|---|
| 0x0 | 0x4 | Header "CFOG" (Mii Maker section) |
| 0x4 | 0x4 | Header 0x00010000 |
| 0x8 | 0x23F7 | Array of owned (saved in Mii Maker) Miis. Order in file is unrelated to canonical order in-app. |
| 0x23FC | 0x4 | Header "CFHE" |
| 0x23F8 | 0x4 | Header 0xFFFFFFFF |
| 0x2400 | 0xA41E | Array of objects? See chapter |
| 0xC81E | 0x2 | Checksum of all of the above (the first 0xC81E byte). See section below. |
| 0xC820 | 0x4 | Header "CFRA" (Invitations section) |
| 0xC824 | 0x4 | Header? 0x39000000 |
| 0xC861 | 0x2B | Weird padding? 0x00 |
| 0xC88C | 0x1C20 (?) | Array of Miis contributed from games, used for Mii Plaza "invitations" feature. The format isn't that of a full Mii. |
| 0xE4AC | 0x14 | 01 00 [..] 00 D2 74 |
| 0xE4C0 | 0x3D860 | Empty (00) |
When encrypted in QR codes, 4 additional bytes are added. Two null bytes and a CRC-16. It's the exact same CRC-16 as for the Wii blocks on the 0x5e first bytes. It seems that the CRC is ignored, the Mii Maker expecting the result of APT:Unwrap to detect integrity loss.
CFHE object
A 0xE-byte long item.
On my database, they're all 0000 0000 0000 0000 0000 FF7F FF7F.
Wild speculation: blacklist of already scanned celebrity (gold) Mii QRs?
Alternative interpretation: FFFF FFFF 0000 0000 0000 0000 0000 is the 1st item; FF7F FF7F 0000 [...] the 2nd, etc;
Checksum
The algorithm used to verify the integrity of the database is based on CRC16-CCITT, though it's an incorrect implementation. It is the same algorithm used to verify Mii Data on the Wii.
To obtain the correct value for the checksum, apply the algorithm to the first 0xC81E bytes of the database. This can be done using FixCRC for Windows; alternativly a pseudocode implementation of the checksum algorithm is given below:
def crc16_CCITTWii(u8[]: data) -> u16:
"""Calculate a checksum of data using the CRC16-CCITT implementation of the Wii
This implementation uses 0x0000 as the starting value, which is different
from what CRC16-CCITT specifies.
"""
# note: a correct implementation of CRC16-CCITT
# would initialize this to 0xffff
u32 crc := 0x0
for byte in data:
# Iterate over every of the 8 bits in byte.
# Begin with the most significant bit. (7, 6, ... , 1, 0)
for bit in 7..0:
# & - binary `and'; <</>> - bitshift left/right; ^ - binary `xor'
crc := (
(crc << 1) | ((byte >> bit) & 0x1)
^ (0x1021 if crc & 0x8000 else 0)
)
for _ in 0..15:
crc := (crc << 1) ^ (0x1021 if crc & 0x8000 else 0)
# only return the lowest 16 bit of crc
return (u16) (crc & 0xffff)
checksum := crc16_CCITTWii(miidb[0:0xc81e]) # checksum over the first 0xc81e bytesMii format
Note: 0x18-3B have been copied as-is from the QR code specification, so they're unverified.
| Offset | Length | |
|---|---|---|
| 0x0 | 0x4 | Mii ID (see chapter) |
| 0x4 | 0x8 | System ID (identifies owner, for purpose of enforcing editing restrictions and blue pants). Is not tied to the MAC address anymore. |
| 0xC | 0x2 | Unknown (related to user-controllable variables) |
| 0xD | 0x2 | unknown; variable (range A-F may alternatively be a timestamp?) |
| 0x10 | 0x6 | Creator's full MAC |
| 0x16 | 0x2 | Padding (0000) |
| 0x18 | 0x2 | Bit-mapped: Birthday (4bit-day,5bit-month), Sex, Shirt color, Favorite (0x40 bit at 0x19) |
| 0x1A | 0x14 | UTF-16 Mii Name (10 chars max, 0000 terminated) |
| 0x2E | 0x2 | width & height |
| 0x30 | 0x1 | bit 0: disable sharing bit 1-4: face shape bit 5-7: skin color |
| 0x31 | 0x1 | bit 0-3: wrinkles bit 4-7: makeup |
| 0x32 | 0x1 | hair style |
| 0x33 | 0x1 | bit 0-2: hair color bit 3: flip hair |
| 0x34 | 0x4 | unknown |
| 0x38 | 0x1 | bit 0-4: eyebrow style bit 5-7: eyebrow color |
| 0x39 | 0x1 | bit 0-3: eyebrow scale bit 4-6: eyebrow yscale |
| 0x3A | 0x2 | note that the bytes are swapped over (little-endian layout) bit 0-3: eyebrow rotation bit 5-8: eyebrow x spacing bit 9-13: eyebrow y position |
| 0x3C | 0x4 | unknown |
| 0x40 | 0x1 | Allow Copying (?) (0D on 0E off 8D on) |
| 0x41 | 0x7 | unknown |
| 0x48 | 0x14 | UTF-16 Author Name (10 chars max, 0000 terminated) |
Mii ID
- Byte 0: generally equals 3 (category?)
- Byte 1: 0/1 = copying off/on
- Byte 2, most significant hex digit: position on page (0-9)
- Byte 2, least significant hex digit: page (0-9)
- Byte 3: generally 0x30 (always for user-created ones?)
Mii categories (pants colors)
Special (gold) Miis
Specialness will override any other color and make the Mii non-editable.
Copying is rumored to have to be disabled.
Zeroed system-id and timestamp?
Imported (blue) Miis
Any (non-gold) Mii with a different System ID will appear as a foreign one.
There is also a range of Mii IDs that are always foreign and uneditable, regardless of the System ID:
Regular (black/red) Miis
Always editable, since they can only appear as such on the console that created them.
Personal (red) Mii
A red Mii that happens to be the first in the file!
Mii values
Each of the following values were found with NTR Debugger: If you want to access the value, grab the given "NTR address" and add 0x08815000.
| Data | NTR address | Variation (hex) | Notes |
|---|---|---|---|
| Face style | 0x894 | 00-0B | Not ordered as in editor, read below |
| Face color | 0x898 | 00-05 | From top to bottom |
| Wrinkles | 0x89C | 00-0B | Same order as displayed in editor |
| Makeup | 0x8A0 | 00-0B | Same order as displayed in editor |
| Hair style | 0x8A4 | 00-84 | Not ordered as in editor, read below |
| Hair color | 0x8A8 | 00-07 | From top to bottom |
| Hair flipped | 0x8AC | 1 if true | From top to bottom |
| Eye style | 0x8B0 | 00-3C | Not ordered as in editor, read below |
| Eyes color | 0x8B4 | 00-05 | From top to bottom |
| Eyes size | 0x8B8 | 07-00 | Left button increases value. |
| Eyes thickness | 0x8BC | 06-00 | Left button increases value. |
| Eyes rotation | 0x8C0 | 00-07 | |
| Eyes spacing | 0x8C4 | 00-0C | |
| Eyes height | 0x8C8 | 00-12 | |
| Eyebrows style | 0x8CC | 00-18 | Not ordered as in editor, read below |
| Eyebrows color | 0x8D0 | 00-07 | From top to bottom |
| Eyebrows size | 0x8D4 | 08-00 | Left button increases value. |
| Eyebrows thickness | 0x8D8 | 06-00 | Left button increases value. |
| Eyebrows rotation | 0x8DC | 00-0B | |
| Eyebrows spacing | 0x8E0 | 00-0C | |
| Eyebrows height | 0x8E4 | 03-12 | Yup, minimum is 0x03 |
| Nose style | 0x8E8 | 00-11 | Not ordered as in editor, read below |
| Nose size | 0x8EC | 08-00 | Left button increases value. |
| Nose height | 0x8F0 | 00-12 | |
| Mouth style | 0x8F4 | 00-23 | Not ordered as in editor, read below |
| Mouth color | 0x8F8 | 00-04 | From top to bottom. |
| Mouth size | 0x8FC | 08-00 | Left button increases value. |
| Mouth thickness | 0x900 | 06-00 | Left button increases value. |
| Mouth height | 0x904 | 00-12 | |
| Mustache style | 0x908 | 00-05 | Order like in editor. |
| Beard style | 0x90C | 00-05 | Order like in editor. |
| Mustache/Beard color | 0x910 | 00-07 | From top to button. |
| Mustache size | 0x914 | 08-00 | Left button increases value. |
| Mustache height | 0x918 | 00-10 | |
| Glasses style | 0x91C | 00-08 | Order like in editor. |
| Glasses color | 0x920 | 00-05 | From top to bottom |
| Glasses size | 0x924 | 07-00 | Left button increases value. |
| Glasses height | 0x928 | 00-14 | |
| Mole enable | 0x92C | 1 if enabled, 0 else. | |
| Mole size | 0x930 | 08-00 | Left button increases value. |
| Mole horiz pos | 0x934 | 00-10 | |
| Mole vert pos | 0x938 | 00-1E | |
| Mii height | 0x93C | 00-7F | |
| Mii weight | 0x940 | 00-7F | |
| Mii name | 0x944-0x959 | UTF-16 | Terminated with 0x0000. Not updated immediatly? |
| Creator's name | 0x95A-96F | UTF-16 | Terminated with 0x0000. Not updated immediatly? |
| Mii gender | 0x970 | 0: Male, 1: Female | |
| Birthdate month | 0x974 | 01-0C | |
| Birthdate day | 0x978 | 01-1F | |
| Mii shirt color | 0x97C | 00-0B | Ordered like in editor. |
| Favorite | 0x980 | 0: false, 1: true | |
| Allow copy | 0x981 | 0: false, 1: true | |
| Unused byte? | 0x982 | ||
| Allow sharing | 0x983 | 0: true, 1: false | |
| ??? | 0x984-0x98F | All zero? | |
| ??? | 0x990-0x997 | 4? |
0x08815998: Same 4 bytes as encrypted Mii: first 4 bits for Mii type, 4 next for number of seconds since 01/01/2010 00:00:00 UTC+3 (should be verified by other country and region 3DS) divided by 2. 0x0881599C: 6 bytes of MAC address of the 3DS that created the Mii. 0x088159A2: 6 unknow uses bytes 0x088159A8: Same 8 bytes as decrypted Mii at 0x04 through 0x0B. Seems NAND specific, kept the same on Miis created on same NAND but different 3DS via System Transfer. Might be a coincidence but the two first bytes are in ID0 folder name in the Nintendo 3DS folder.
Mapped Editor <-> Hex values
Most of the values are ordered (left button decreases, right increases, color choices are top to bottom...) but for most "main" part of the UI, where you choose the style of the part being edited, hex values has no correlation with displayed order. Here is a JSON that can go from a Part, a Page and Position to the right hex value. This is 0 indexed (eg: datas["face"][0][11]).
{
face: [
0x00,0x01,0x08,
0x02,0x03,0x09,
0x04,0x05,0x0a,
0x06,0x07,0x0b
],
hairs: [
[0x21,0x2f,0x28,
0x25,0x20,0x6b,
0x30,0x33,0x37,
0x46,0x2c,0x42],
[0x34,0x32,0x26,
0x31,0x2b,0x1f,
0x38,0x44,0x3e,
0x73,0x4c,0x77],
[0x40,0x51,0x74,
0x79,0x16,0x3a,
0x3c,0x57,0x7d,
0x75,0x49,0x4b],
[0x2a,0x59,0x39,
0x36,0x50,0x22,
0x17,0x56,0x58,
0x76,0x27,0x24],
[0x2d,0x43,0x3b,
0x41,0x29,0x1e,
0x0c,0x10,0x0a,
0x52,0x80,0x81],
[0x0e,0x5f,0x69,
0x64,0x06,0x14,
0x5d,0x66,0x1b,
0x04,0x11,0x6e]
[0x7b,0x08,0x6a,
0x48,0x03,0x15,
0x00,0x62,0x3f,
0x5a,0x0b,0x78],
[0x05,0x4a,0x6c,
0x5e,0x7c,0x19,
0x63,0x45,0x23,
0x0d,0x7a,0x71],
[0x35,0x18,0x55,
0x53,0x47,0x83,
0x60,0x65,0x1d,
0x07,0x0f,0x70],
[0x4f,0x01,0x6d,
0x7f,0x5b,0x1a,
0x3d,0x67,0x02,
0x4d,0x12,0x5c],
[0x54,0x09,0x13,
0x82,0x61,0x68,
0x2e,0x4e,0x1c,
0x72,0x7e,0x6f]
],
eyebrows: [
[0x06,0x00,0x0c,
0x01,0x09,0x13,
0x07,0x15,0x08,
0x11,0x05,0x04],
[0x0b,0x0a,0x02,
0x03,0x0e,0x14,
0x0f,0x0d,0x16,
0x12,0x10,0x17]
],
nose: [
[0x01,0x0a,0x02,
0x03,0x06,0x00,
0x05,0x04,0x08,
0x09,0x07,0x0B],
[0x0d,0x0e,0x0c,
0x11,0x10,0x0f]
],
mouth: [
[0x17,0x01,0x13,
0x15,0x16,0x05,
0x00,0x08,0x0a,
0x10,0x06,0x0d],
[0x07,0x09,0x02,
0x11,0x03,0x04,
0x0f,0x0b,0x14,
0x12,0x0e,0x0c],
[0x1b,0x1e,0x18,
0x19,0x1d,0x1c,
0x1a,0x23,0x1f,
0x22,0x21,0x20]
]
}