We just became aware of an issue with Super Paper Mario that has just been released in the USA. It works fine on US consoles. But if you want to play this game on a PAL or Japanese Wii, be it from an original disc or a backup, make sure you upgrade your Wii firmware to the latest available version before inserting the game.
The game contains an NTSC-U Wii update that is not compatible with early European and Japanese Wii firmwares. Failure to upgrade your Wii with the latest firmware before running Super Paper Mario USA on an import system can result in a bricked Wii.
This issue is not specific to CycloWiz, you'll have the same problem with any other region free mods/tricks. It doesn't brick the chip, but the Wii itself, so be very careful !
you need Firmware version: 2.2E