Hidden Channels refer to channels that can't be accessed in the Wii Menu, being found in certain apps. These are usually for setting user information for multiple services.
Address Settings[]
Address Settings, Address Information, or Set Personal Data[2] is a channel used for editing the address used for Demae Channel and the Digicam Print Channel. It looks different compared to the system settings, this is used for setting the user's personal information such as name, address, phone number, and email. Multiple addresses can be set and the entire channel can be locked with a PIN to prevent tempering.
EULA[]
EULA is an agreement app for the user to have Wii Network Services[4] (those being WiiConnect24 and Wii Shop Channel). This channel is used to get the user to accept or deny the End User License Agreement for Wii Network Services. It can be accessed by going to Wii Settings and WiiConnect24, then clicking User Agreements. The channel will tell the user if they are in an unsupported country if it says services are not currently being offered. The agreement is a webpage from wii.com, a homebrew exploit uses this to get the a HackMii Installer on to a user's Wii with a custom DNS.
Region Select[]
Region Select is a hidden channel used to set the Wii's assigned region for online functionality. This channel can be found when going into Mario Kart Wii settings and if they region was changed, Everybody Votes Channel will notify the user that they have to select an area.
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