I have an old Wii U that I was going to attempt to salvage today, but before digging it out and bothering I thought I'd see if anyone has dealt with this scenario. Long ago I went a bit overzealous with a vWii hack. I believe is patched some IOS files that I shouldn't have. That stopped vWii from working, causing a black screen on boot. Later on this likely stopped updates to the U from installing with an error, effectively breaking all new titles and DLC. If it's on 5.3.2 or higher, can I use wuphax to steam roll the bad IOS files or some other tool to allow updates, and hence a path to DS game installation and haxchi?