Hi guys!

This is my first post here so I apologize if I say or do something wrong.
I have a hardmodded wii with a wiikey 2 (wii is bought in the US, but wiikey is made for european market). Some time ago, I've updated the system to 4.2 and installed HBC, neogamma loader and played all my backedup games with ease. But now I have a problem. I Want to play fifa world cup, but it won't play unless I update the Wii to 4.3 (but i don't want to do that because I read so much about hacking the 4.3 filesystem). When i try to load it using neogamma loader it just goes back to the neogamma home screen.

So, my question is - can i play games (specifically fifa WC), for which wii needs to be updated to 4.3, on my 4.2 wii? And If yes, how?

do another softmod or what?
or update my wiikey (NB, I've never done this before)?

thank you in advance!