Is it safe to install cMIOS on 4.0u system menu?
When I added the homebrew channel to the 4.0u Wii it was a virgin Wii and I went through this process:
Put the contents on your SD Card as it is in the .rar just drag all to SD Card.
Go to Data Management then choose Channels followed by SD
Choose "Yes" to load boot.dol
LoadMii will then load.
Press "A" on the WiiMote.
Go down to DowngraderIOS35.dol and run it by pressing "A" on the WiiMote.
Choose downgrade IOS35 and then let it go, then choose exit (ignore the patchmii and dvdx)
You'll be back in LoadMii now.
Go down and run Wad Manager 1.4 by pressing "A" on WiiMote.
Just select normal settings (don't change IOS)
Install IOS35.wad.
Exit Wad Manager 1.4 by pressing "HOME"
You'll be back in LoadMii.
Run Wad Manager again, Select IOS35 when it asked what IOS to use.
Install the CIOSv7.wad.
Press "Home" to exit.
Then Run Wad Manager again.
Tell it to use IOS249.
Install IOS36.wad, BUL3g.wad & HBC.wad
You will now restart Wii to find that Backuplauncher and Homebrew Channel are installed and working.