I have successfully downgrade system menu many times on different Wiis, but on this one particular Wii, downgrading to 3.2u from 3.3u always error out with -10015. After many tries, I decided to upgrade to 3.4u and then downgrade. After running IOS downgrader, I have no problem downgrading all IOS and running homebrew and installing WADs, except downgrading system menu. I cannot find any information on this error. Does anyone know how to fix it?