Use Wiu 1.1 LOL
If you have a Wii the same region as the game it is okay to update.
The latest firmware to my knowledge is 3.3u; What firmware does your Wii have?
Bricking happens when you update your Wii through a game update of another region.
If you play a new game or one of another region then use programs such as Wiu and Wum.
Always check the forums for information on new games and updates so you don't ruin anything.
Those are my 5 cents.