Okay here's my take on this idea, it's not an exploit, tunip3 has not created, exploited or done anything that would be noted as a convenient, useful or reasonable idea. This would probably work, but frankly, it's stupid. His idea is basically the concept of dsiwarehax transferring on the 3ds (the act of exploiting dsiware and then transferring it to another system.) I'm not sure he's taken an actual good thought about his idea, cause he missed some very, very obvious skips. His full idea is basically to install haxchi on title using hachihachi (ds emulator used on wiiu) and system transfer this to another console, with the prerequisites being to backup your nand, format your system and then transfer and after restoring the nand back with a hardmod (thus making it a necessity).


I don't think he's put a lot of thought into it at all, it's kinda stupid, it requires purchasing the haxchi game again and paying for (or doing) and purchasing another console if you don't have one to do this with. Just no, it's a nice idea, really, but @tunip3, you didn't put any thought into this. It really seems like more of a call for attention then an actual idea that you're planning to have made readily available and become the next way of hacking the Wii U.


Back to the not putting a lot of thought into it, seems like he didn't even bother to think about alternatives to a hardmod, for instance we have redNAND, a readily available public resource that's in multiple firmware patchers (cfws), here are some other ways of accomplishing what you have hypothesized and what other things could be done to solve this problem of no haxchi on 5.5.2 @tunip3.

Like I stated in the first bit of this section, redNAND. A much superior alternative then using a hardmod and fucking over your sysNAND. It's a sandbox, this is stuff redNAND is meant for.
Get a new entrypoint, may be a stretch to some of you, but all we really need is a webkit exploit, think of it like 3ds homebrew. Whenever browserhax is patched a new entrypoint is made available within months. Waiting may be a better alternative to spending to much money on this.
Expanding on the money part. This method requires purchasing a hardmod (or doing your own, but really the general public is not going to be able to hardmod their systems) which is around $50, purchasing another haxchi title $7 and requires purchasing another console. Honestly, it's extremely redundant. Another fucking console, just to hack the first one, for gods sake just wait for another entrypoint instead of spending a good $150 to get yourself homebrew on a single dead console.
A much easier way to get homebrew on your console would be just sell the box and get another one, they're extremely cheap.

Concluding my rant on this, arguably useless thread, I feel like @tunip3 just wants fame, it honestly seems like he doesn't care enough to think about it, I genuinely think he just wants to be known as the one to first invent this new method (which is really just a stolen 3ds method.) And it's a really, really bad idea. It's extremely inconvenient and really shouldn't exist in the first place. Honestly, just wait for a new entrypoint, this is not worth your time or your money. Please @tunip3, think about what you're going to post, this is just creating useless hype for something that could be accomplished by just selling your current console and purchasing another console, instead of hardmodding and buying more haxchi games.


This concludes my rant, please, this is not worth your time guys, please just wait for a new entrypoint.


tl;dr
JUST WAIT FOR A NEW ENTRYPOINT, THIS IS NOT WORTH YOUR TIME, MONEY OR EFFORT.