Softmod Any Wii (Version 1.0 - 4.3) | Retro video games, Wii console, Wii games
Nintendo Wii Black Video Game Console (RVL-101 USA) Accessories, 4 Games, 4.3U | eBay
How to Easily Jailbreak Your Old Nintendo Wii
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