Coldboot hax should provide a GUI to choose OFW or CFW, that way it's a bit more brick-proof. And why the fuck don't we have a better coldboot hack yet? Not being able to write the NAND backup back to the Wii U with softmod is just pathetic.
Coldbooting is just horrible... I've just screwed up my own WiiU cause I didn't remember the whole process, which I did 5 years ago, and my God, is immensely annoying and full of details and I will not even try to understand what I did, cause there are so many actions I could have done using this damn thing and would've given me the same result! The worst jailbreak EVER! I agree that someone should've already made it more user-friendly! Guess Switch's arrival overshadowed WiiU on that... In any case, I do not recommend, I wouldn't recommend it to anyone, because YES it is great to have, on the fly CFW, but have you just don't remember a step, ONE STEP, and you lose the whole videogame, BRICK IT .. do not lose access, do not lose your save files or delete all the files from HD, or whatever, anything stupid like that - it would be a massive pain, but still could fix it - NO ... YOU LOSE THE VIDEOGAME IT SELF! That's ridiculous @ last 2019... Sorry for my outburst lost my WiiU