在油管发现一个视频，教如何把vwii从日版改为英文版，本人没验证过，有需要的可以试试，有问题可以上油管搜相关标题
原文：
Before follow this tutorial this is optional, Backup your vWii by using FT2SD to backup your slccmpt in case if you want to restore your backup or if you want to use your vWii backup in dolphin emulator get ft2sd: https://apps.fortheusers.org/wiiu/ft2sd

Download vWii region changer.zip https://www.dropbox.com/s/rejhxf6xs1uxgkz/vWii%20region%20changer.zip?dl=0
then follow the video
for example I change my Japanese vWii to English Europe vWii

This work with any Wii U JAP USA EUR you just need to be on 5.5.3 or 5.5.4 or 5.5.5 or higher

所需文件在这里