I've been thoroughly enjoying the many customs uploaded to this site, and must thank everyone for their contributions and assistance on other issues I was having. I unfortunately have a new situation - I downloaded a couple rb3con files, converted them to Wii format, performed the process as any custom and they appear in my RB3 game as all customs do. These songs however do not play - they give the error "To play this song, you need the latest update for Rock Band 3. Please make sure you have downloaded all updates for this title". All customs work perfectly except for a select few that give this error.
The thing is - I don't want to risk updating my Wii firmware as I could be locked out of all my homebrew including Rock Band customs and I'd prefer not to use a new exploit and reinstall all the ios and cios patches and all that (or worse, brick the system). Is there a way to update the Rock Band 3 version to play these songs without updating the Wii firmware?