ModMii is a tool that able to download all the files needed to modify any Wii; it can generate custom guides based on your Wii's specifications, and save the files in their appropriate locations for easy offline softmodding. Sample guides (for illustrative purposes only) are available here.

It is also capable of performing many other Wii hacking functions like setting up a usb-loader and creating an emulated NAND. ModMii was also the very first official installer for the widely adopted d2x cIOS.

Even if your Wii's SD Card reader is broken or you just don't have an SD Card, you can use a Hard Drive formatted as FAT32 in place of an SD Card to complete the majority of ModMii's functions (SD Card notably required for Bootmii and making a NAND backup).

• Download all necessary files for Wii System Menu modification, upgrade, and downgrade.
• Update outdated softmods based on SysCheck logs from your Wii.
• Create a user-friendly guide for setting up a USB-Loader, including external hard drive formatting.
• Install SNEEK, build emulated NANDs, and Batch Extract Wii/Gamecube Games for SNEEK+DI or UNEEK+DI.
• Load NEEK on a Wii without softmodding using the Abstinence Wizard.
• Change the region of your Wii.
• Download individual IOS/cIOS files, Official Wii Channels, System Menus, Wii Apps, DML, etc.
• Install patched IOSs without a WiFi connection on your Wii.
• Customize Bootmii, Wad Manager, and MMM startup settings using ModMii Configurators to create custom config files.
• Build various System Menu Themes (csm's and themed SM Wads).
• Provide solutions for upside-down Homebrew Channel and HackMii installer with no Vulnerable IOS problems.
• Advanced Custom Downloads Feature for patching and changing the slot/version of IOSs/cIOSs (use with caution).
• Drag and Drop functionality for various Wii file types, including nand.bin check/clone/defragment, WAD modify/unpack/transfer, mym & csm theme creation, dol & elf app launcher, zip HBC transfer tool, etc.
• Save/Load custom Download Queues and more.

Download and run the ModMii Installer.

More information on installing and using ModMii can be found in the Usage page.