NUS
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NUS (short for Nintendo Update Server) is a set of HTTP servers used to serve updates for Nintendo's consoles. For the Wii and Wii U, this server is located at http://nus.cdn.shop.wii.com.
Protocol
The Wii uses user agent wii libnup/1.0 for all requests.
Query a list of titles
To query a list of titles, a SOAP request is sent to /nus/services/NetUpdateSOAP, with action urn:nus.wsapi.broadon.com/. The result is an XML structure containing all titles.
Download a TMD, ticket, or content
These can be downloaded from /ccs/download/<titleid>/<name>, where titleid is the title ID in hex, and name is one of three things:
- tmd[version] - downloads the TMD for the version provided, or the latest version if no version is provided
- cetk - downloads the ticket
- <contentid> - downloads a specific content