You might want to get another copy of the app from a different source. Also, make sure that you have install IOS16-64-v257-prod.wad and cIOS-fix.wad. these will allow you to change your IOS and firmware setting.
I know that you don't want to downgrade but I highly recommend it! With 3.2, you can install wads and starfall your Wii to work around possible bricks!