I have a softmodded Wii U with HBC,cIOS etc in Wii mode. I had never a problem until the day I tried Wii Fit Plus.After that day,when I try to boot vWii,the message displayed says that the system files are corrupted. I searched the internet and tried every method to resolve the issue. - I deleted the Wii Fit Plus save file both from system memory and SD card. - I deleted some SD card saves that MIGHT be corrupted. - I tried to boot vWii without the SD card inserted. - There were some rumours that if you let the system on for a whole night in "The system files are corrupted" screen,Nintendo does an online check and the system downloads the missing/corrupted files again. Unfortunately,NOTHING works. So,no NAND backup restore option for vWii yet and no Format option either (at least for vWii only,I do not want to format my Wii U too) , so what can I do? Is there any viable solution please?