Since the recent news that the new Wii System Menu Update Blocks the Homebrew Channel, Muzer has released Wii Shop and IOS51 installer to circumvent it.
Download: Wii Shop and IOS51 Installer v1 / Wii Shop and IOS51 Installer v2 (includes bugfix)
To quote: Wii Shop and IOS51 installer is a very quick modification of PatchMii modified by Muzer that does one thing: It installs the new IOS51 and Wii Shop Channel, without installing the patches to all the other IOSes. This means that as long as you didn't update, you can now install this to use the Wii Shop Channel but keep all the benefits of not having the update.
Anybody at all could have made this, just everyone is too busy at the moment, so I figured I would make it. It's literally modifying 4 lines of code and commenting out a bunch of stuff. Because of this I didn't bother to include the source in the package, but if anyone wants me to, I'll happily include it.
This does not have the same effects as updating, so you get the best of both worlds. You can do this on any system menu version and it will work fine, keeping the system menu version you have.
I made the program as two separate dol files, because it's easier and quicker for me that way, if this lasts a while I'll make a version that combines the two files.
NOTE: TAKE OUT ANY GAMECUBE MEMORY CARDS/CONTROLLERS AND USB DEVICES BEFORE INSTALLING ANYTHING. The first time one person installed the IOS51, and Shop Channel.
One person had a Gamecube memory card, and a wireless adapter in the Wii, and it didn't install correctly. But after taking out all Gamecube items, re-installed everything and it worked fine. Axelpaxel was the one that found that USB devices did it too.
Instructions: Simply load one file, then the other. It does not matter in which order you load them. Use any method. More PlayStation 3 News...