Wii update problem please help!!!?

i accedently deleted the forecast and news channel and i found a way to bring them back by updating my wii but the problem is its already v3.4u so i tried updating but it said i am already up todate and the 2 channels appeared but i cant use them every time i click them a messege says you must perform a wii system update to use this channel and when iclick update it says u r already up to date i tried downgrading my wii but i couldnt bec of the new upgrade so please help me