rip sadly I'm not skilled in that regard yetYou need hardware and soldering to restore a nand on wiiu. Mainly a teensy
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If I do this succesfully would I be able to format the wiiu?The only other way I know of is to edit the system.xml file to point it back to the system menu instead of the game title. I really wouldn't advise doing this tho unless you 100% know what you are doing because it's quite easy to brick.
I'm still baffled why they wont load tho, even got me googling