well if you use usbhelper try downloading the program wiivcinjecter here on gbatemp, that program can creat nintendont config files (ninconfig.bin) so just put your setting and hit creat and then put them on the sd card root.but i have installed super mario sunshine, from wii u usb helper.
And i have nintendont in sd card.
How can i start super mario sunshine before change settings, if super mario sunshine is on wiiu hdd ? ( wiiu hd not fat32 but with wiiu format )