Ok, here's the problem. I have a 4.0U Wii (NTSC). It was 3.2, but I updated it via Waninkoko's 4.0 updater, and it all worked fine. Weeks ago, I got Wii Fit, it asked me for an update, which I did, after that, most of the time I turn on my Wii, it stays on a black screen. On other tries, it boots normally, but the black screen shows up very often. Is there something I can do to fix this safely?