Remember to be careful with IOS60 if you are on 4.1 or lower, the new version (0.22) fixes the stub issue but it still can be dangerous if your internet or power goes off. The new version has the source included because of the copyright. The current source download is for v0.21.

Which version do I download?

If you need Shop Channel, use version 0.23 which downloads v18 of the Shop Channel, instead of getting latest version, due to some issues caused by getting latest version. This version also gets v6174 of IOS60 as in v0.22

For anyone using System Menu 4.1 and earlier, use WiiSCU v0.22
    * Fixes the IOS60 stub issue by getting v6174 instead of the latest version

For anyone using System Menu 4.2 and do not plan on downgrading, use WiiSCU v0.21 (latest official version by Wack0).
    * Always gets the latest version of IOS60 

• Fixes Shop Channel installation issues by getting v18 instead of just getting latest version

• Fixed the IOS60 stub issue by getting v6174 instead of the latest version.

• Added code for debug purposes.
• No more 'epic fail' -- now it shows what patchmii returns.
• IOS51 and Photo Channel 1.0 support removed.
• Added an option to exit to the Homebrew Channel.
• News/weather channel now installs HAFx/HAGx as well as HAFA/HAGA (using gamedisc region).
• Added sysconf.c to determine region to install news/weather channels.
• Tidied up code a bit.

• Wii homebrew - StartPatch v4.2.3
• Wii homebrew - Pimp My Wii v1.3
  

Via Wiibrew