yes, it should. make a backup of yours in case it doesn't work. I can't guarantee it will, but it's what I've always used, and I have no issues with emunand. though, you have to use a special FAT library with the cios in order to use wiiware/vc games if using ustealth. it's in the ustealth thread, should be in op for the link to it. black screen otherwise iirc.
not exactly, but when installing the cios or reinstalling it if it's already installed, you need that FAT library if using ustealth. this is something I learned quite a while ago. if you don't do that, games will work, but only if you don't have ustealth on. if you do, black screen. just overwrite the FAT library with the one in that link, then install. that's all there is to it.