Homebrew Wii wants to update?

Ok i have a wii which i jailbroke? or w/e but i have homebrew and all that on it....i just connected it to the internet after not playing it for over 6 months since i want to use it with netflix, and it just connected to the internet but it want's to update??? should i say yes or no? cuz i'm not sure if it will brick my wii or mess it up or erase what i have on it...anyone knw??