Title
A title is a group of code and/or data that the Wii U uses. Titles generally represent apps such as OSes or apps on the System Menu, although other titles also exist, such as Version Data.
Title IDs
Each title is given a 64-bit title ID that uniquely identifies the title; if two titles have the same ID, then they are most likely different versions of the same title.
The upper 32 bits of each ID describe general properties of the title, while the low 32 bits are the title itself, and usually uniquely identify the title.
Product Code
Product codes are composed of 3 segments: The platform, app type and unique identification code provided to developers by Nintendo, with the last letter representing the title region. The Wii U only ever has "WUP" listed as the platform.
App Type
| Character | Type |
|---|---|
| P | Generic Software |
| N | Digital-Only Title |
| B | Kiosk Interactive Demo |
| M | Downloadable Content |
| T | Demo |
| U | Update Data |
| X | Miscellaneous |
Title Type
The following types of titles have been seen.
| Upper 32 | Description |
|---|---|
| 00050000 | eShop title |
| 00050002 | eShop title demo / Kiosk Interactive Demo |
| 0005000C | eShop title DLC |
| 0005000E | Title update |
| 00050010 | System Application, last byte OS version |
| 0005001B | System Data Archive, last byte OS version |
| 00050030 | Applet title, last byte OS version |
See WiiBrew for info on WiiMode titles.
The upper 16 bits seem to be the the platform ID, which is 5 for the Wii U. The lower 16 bits appear to be a bitmask; the following bits are recognized:
| Mask | Meaning |
|---|---|
| 0x1 | Non-executable data |
| 0x2 | Free |
| 0x4 | Patches another title |
| 0x8 | Add-on content |
| 0x10 | System title |
| 0x20 | Runs in background |
More information on product/title codes can be found at 3DBrew. Most of the information is exactly the same and applicable to the Wii U, as Nintendo likely opted to have universal systems between products at the time to make support and organisation easier.