No,
Just installed the 'backup channel' on a mates wii as ours was chipped a week after buying it last Novemebr so needed a 'virgin' wii to install it on
It worked first time, sort of, I got a balck screen inbetween installed some of the WADs as per the guide, but the homebrew channel was installed perfectly. My mates running 3,1e firmware so couldn't get why it wouldn't work as per the guide
So, I deleted the homebrew channel, started again, but this time installed the homebrew channel then reset the wii as per the guide
Then I went to install the WADs one after the other, without resetting the wii inbetween each WAD installation as this caused the black screen issue, reset the wii after installing ALL the WADs as described in the guide once the homebrew channel was installed
Backup channel installed perfectly after the reset, so try installing them all once the homebrew channel is installed
When installed on our chipped wii the guide worked perfectly, but on my mates I had to try the different method above, end result was it worked on his unmodded and unchipped wii that was less than 3 months old, running 3.1e firmware
I took along my backup copy of Guitar Hero just to make it a bit more difficult for the backup channel as thats a custom hacked Guitar Hero 3 to play Guitar Hero songs, it worked perfectlt on my mates 42" plasma with no issues at all
The only issue is that the homebrew channel is now on v10.1, but the installed version in the softmod guide is v9, don't think it makes that much difference, but I have updated my version of the guide to v10.1 so the next install I do should be the very latest release of the homebrew channel