So I have just bought a Wii U 5.5.3 and I want to softmod it as soon as I can. I know there is plenty of information about it, and this is a problem: too much information.

I have read there is a way to softmod it by purchasing a NDS game, but there is another method which does not require such purchase. I don't mind buying that game of course, but it's just I don't know if any of those methods have any advantage and if the format of the downloaded games will differ...

Any thoughts about which is the best and more reliable method to softmod a Wii U nowadays?

Thanks in avance, guys.