How To Hack Any Nintendo Wii 3.0 - 4.3 - Homebrew Channel - Letterbomb Exploit - Softwii [HD] - YouTube
After performing a successful connection test on a 4.3U console, this message pops up after agreeing to perform a system update (details in comments) : r/WiiHacks
How To Homebrew Any Nintendo Wii (Latest Version 4.3) - YouTube
How to Install Homebrew on Wii Menu 4.3 (with Pictures) - wikiHow