I recommend you use the Windows program, ModMii. It has many Wii modding tools or "activities" built in.
⚠️ Check your SD/USB for a WAD folder. If you have it, please delete it before continuing.
Download and install ModMii to a Windows PC
https://modmii.github.io/
- Launch Modmii Classic (not ModMii Skin)
- Type
I Agreeand press enter - Type
SUand press enter to select the Syscheck Updater Activity. - Provide it the
syscheck.csvfile you just made by dragging thesyscheck.csvfile from the root of your SD/USB and dropping it into the ModMii window. - It might ask you if you want to remove\overwrite RiiConnect24 in IOS 31. You can say yes.
- It'll list many wad files that it will download, select
Y = Yes. TypeOto Open File Location "COPY_TO_SD" - Copy the contents of the COPY_TO_SD folder to the root of your SD. Follow the generated guide that opened in your web browser closely.
⚠️ Don't forget to install the stub files in root:/wad/stubs/ after you install the other wad files.