The 32004 error is its not connecting to the internet, you have a firewall blocking or something, if its a dial up connection it can cause problems.
You can download the latest hackmii installer and run through HBC and install the latest HBC, as far as update to 4.3 online with that error I don't know much about it, there are updates on discs. If you have gecko os adn run a disc though it, it will tell you want the games wants to update and will install just that update. One of the senior guys that know more can help with the code error. I had to take my security off my router to get my wii to connect, some have said you need to have wep security for the wii to get through.