ModMii for Windows

Introduction: What is ModMii?

ModMii is able to download all the files needed to modify ANY Wii, WiiU or vWii; it can generate custom guides based on your console's specifications, and save the files in their appropriate locations for easy offline softmodding where possible. Sample guides for illustrative purposes only are available here.

It is also capable of performing many other Wii\vWii 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). In fact ModMii can help users softmod a Wii even without an SD Card or Hard Drive (as long as it has internet), but unless one or the other is eventually incorporated there probably isn't much point.

ModMii only works on Windows, and ModMii v8.0.0 and higher requires 64-bit Windows 8.1 or later. If you do not have a Windows PC and are unable to run ModMii you can try running Windows in a virtual machine or just use wii.hacks.guide or wiiu.hacks.guide instead.

The video below describes some of ModMii's many features; however note that it was created before WiiU & vWii support was added in v8.0.0.

What can ModMii do?

Softmod any Wii, WiiU or vWii
Generate custom guides depending on the options that you select
Update only your outdated softmods based on a SysCheck log from your Wii or vWii
Check for updates to your Wii\vWii\WiiU homebrew
Softmod Wii and vWii completely offline without requiring internet on the console
Safely upgrade or downgrade your Wii System Menu to 4.1, 4.2 or 4.3 protecting against 003 bricks
Able to build a custom easy to follow guide to setting up a USB-Loader (including how to format/partition your external hard drive)
Install SNEEK (Wii only), build emulated NANDs (Wii & vWii) and Batch Extract Wii/Gamecube Games for use with SNEEK+DI or UNEEK+DI
Load NEEK on a Wii without softmodding it using the Abstinence Wizard (i.e. Non-permanent Wii Hacks)
Region Change Your Wii
Download\build IOS & cIOS WADs, Official Wii Channels, System Menus, Homebrew\apps, etc.
Install patched IOSs without a wifi connection on your Wii\vWii
Customize Bootmii, Wad Manager and MMM config files to adjust their start-up settings
Build Wii\vWii\Wii-Mini System Menu Themes
HackMii Solutions Wizard for Wii's experiencing an upside-down homebrew channel or HackMii Installer No Vulnerable IOS problems
Advanced Custom Downloads Feature to easily patch and change the slot/version of IOSs/cIOSs. It can also build 3 different types of forwarder dol's and iso's (only use this feature if you know what you are doing!!)
Drag and Drop \ open various file types to perform different functions (e.g. nand.bin check\clone\defragment, WAD modify\unpack\trasmit\info, mym & csm theme creation, dol & elf app launcher, zip HBC transfer tool, patch deflicker video filter, modify EmuNANDs, etc.)
and much much more!

How to Use ModMii

Download and run the ModMii Installer from the links below
More information on installing and using ModMii can be found in the Usage page (under construction)

Download
Select your language below to download ModMii.

NOTICE: Only English is currently actively supported.
All other languages are so outdated that download links for them have been removed for now.
If your language is not available then consider contributing a translation.

8.0.0 Highlights - 2025:03-10:

Added support to softmod the WiiU (with Aroma), vWii, or both. All ModMii features now also support WiiU/vWii except HackMii Solutions Wizard (inapplicable), Region Change Wizard and SNEEK Installation. Notably ModMii can now build vWii d2x cIOS WADs, vWii EmuNANDs, analyze vWii SysChecks, construct vWii themes and support vWii nand dumps.

ModMii still does not fully support the Wii Mini however it can now build Wii Mini themes by opening mym or csm files with ModMii.

ModMii v8.0.0+ requires 64-bit Windows 8.1 or higher and Microsoft Visual C++ 2015-2022 for all features to work properly.

All .NET Framework 3.5 system requirements have been removed.

A lot of supporting apps and processes have been improved, removed or replaced by WiiPy.

ModMii’s File Cleanup & App Updater feature drastically improved. It will now check if updates are available for every single Wii/vWii/WiiU app available on Open Shop Channel and Homebrew App Store libraries (over 400 apps!), plus Aroma, Environment Loader & Nand Dumper.

New recommended NandLoader for Forwarder Channel WADs (OpenDolBoot’s nboot)! ModMii can now modify the NandLoader of a Channel WAD (or folder of WADs) to work simultaneously for Wii and vWii! Wii Game Shortcut Creator (WiiGSC) has been similarly updated to v1.1 ModMii Edition.

New option when modifying applicable Channel WADs (or folder of WADs) to be able to detect, disable, and re-enable Deflicker video filters. Can also apply/remove N64 Expansion Pak and N64 Dark Filter patches for applicable N64 WADs.

New “Game Image tools” menu/feature supporting wbfs, iso, ciso filetypes (or folders containing these file types). Options include the ability to Disable Deflicker, Re-enable Deflicker, or Extract game contents of Wii and Gamecube games.

WAD Modifier: Added ability to detect and modify the following additional Channel WAD Attributes: AHB Access, DVD Video Access, NandLoader, Deflicker, Visibility (with optional minimalist banner to reduce filesize).

New “Inspector Wadget” feature (get it?); inspect and display WAD Information on any WAD or folder of WADs. Displays WAD Info like cIOS tags, AHB or DVD Video Access, NandLoader, Deflicker, etc.

When building/modifying an EmuNAND using ModMii Classic, users can now also input ANY mym or csm to customize the theme.

Updated bundled d2x version to v11-beta2.

Swiss cMIOS r1788 has replaced WiiGator/WiiPower’s cMIOS as ModMii’s recommended cMIOS; however a cMIOS is still excluded from ModMii’s recommended setup by default (adjustable in ModMii’s options). Swiss cMIOS r1788 should behave identically to WiiGator/WiiPower’s cMIOS and official MIOS except if Y is held during any GameCube mode load it will start the built-in Swiss.

Reorganized Download Pages. Added a number of WiiU Homebrew downloads to a Download Page 5 (new). Moved PC Program downloads from page 2 to 5.