I just hacked a 4.3E Wii using the LetterBomb method:
Another method for installing the Homebrew Channel on your Wii with version 4.3:
Up until now the only way to liberate your Wii console and enable the use of homebrew with System Menu 4.3 was to use a gamedisc based exploit such as â€œBatHaxxâ€, â€œReturn of the Jodiâ€ and others.
This method completely removes the requirement for an exploitable game.
This exploit reuses (and abuses) some of some Nintendoâ€™s Wii Messageboard functionality.
You will need:
A Wii running System Menu 4.3 (E/U/J/K)
A SD(HC) card with some free space
Your Wiiâ€™s WiFi MAC Address (available from your Wiiâ€™s system settings). This is needed because the Wii will only accept messages addressed to its specific MAC address.
A few minutes of your time
Go to this website for the files.
Once you have downloaded the zip file, unpack it to the root of your sd card. Make sure you already have a message made on your Wii message board for today (just play a game for a while). Then go back to the message of yesterday and click it.
After that, install Pimp My Wii and go update some more files. And some more, and some more, etc.