Something similar happened to me. I softmodded using mauifrog's softmod guide, and was on 4.1U. I inserted my New Super Mario Bros Wii disc, and it asked me to update. I had Priiloader with block disc updates and the version patched 4.1 menu, so I acted like Homer Simpson and updated. My Wii was restarted, and everything was (still is) normal, even the settings menu still says 4.1U and SaveMiiFrii also says 4.1 (USA). Only difference was that thee news and weather channels were back (I deleted them with AnyTitle Deleter).