How to Connect Your Nintendo Wii to the Internet: 15 Steps
str2hax - Wii Guide
Nintendo Support: How to Connect to the Internet
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 Connect the Nintendo Wii to the Internet - YouTube
str2hax - Wii Guide
How to Connect Your Nintendo Wii to the Internet: 15 Steps