Im sure im being thick here. Have the original wii fit, which installed a channel that you can use if you just want to weigh yourself. I have a backup on hard drive of wii fit plus which i obviously use now. I cant find any option to update the channel, and when ive used the channel to weigh myself it doesnt seem to correspond with the wii fit plus, ie i can have just used wii fit plus, but the channel says i havent used it in weeks. am i doing something wrong? is there a newer channel?