Hi I ended up bricking my wii after installing the system update from Wii sports resort disc, All i get when i power on my wii is a black screen. I am able to get into bootmii, by inserting the SD and rebooting, and into homebrew channel. I did not backup my nand before. I was on firmware 3.3u after downgrading i believe. I am unsure of what to do now. need help!