You can do the softmod to your 3.4 just fine regardless of serial number, and you DO NOT need a game to do this. An SD card is REQUIRED though. YOu do not have to upgrade if you do not want to, but let it be known that preloader along with BootMii as boot2 is recommended. On 3.4 you cannot install preloader, it only works on 3.2, 4.0, 4.1 & 4.2 [although we DO NOT recommend upgrading to 4.2].
Since this is your first post,
Welcome to WiiHacks,
Take the time to read the RULES! of the site, you don't wanna be sent to the Reading Room, or worse, Banned because you broke a rule of the site
Please take a look at this link for any answers to most of your questions/problems New Member Introductions [thanks ShadowSonic]
BUT!!! Before asking a question please visitTHIS! thread..... [thanks FAVS]
If your on the 3.1 - 4.1 System Menu then you may want to start HERE! [thanks Dogeggs]
If your on the 4.2 System Menu, then THIS! is where you want to be. [Please note, DO NOT update to 4.2 if you arn't already] [thanks messie]
Getting an error while trying to do something? The Answer is HERE! [thanks messie]
Wanna know what all this cIOS/IOS talk is all about....Then check THIS! thread out. [thanks Cressida]
Any other questions/answers that were not covered, then please ask them HERE!
Please read, reAD, READ till your eyes bleed. Go over everything until your sure you can attempt these mods. You don't want a bricked Wii because of a step you might have missed.
Have Fun! and Good Luck!!!!