Input the following as your name in champ mode.
Password Effect NEWVIEW Unlock All Arenas
Complete the following.
Unlockable How to Unlock Bonus Stages Win a career mode fight at the Staples Center or Madison Square Garden Different Fighting Styles Win matches in ESPN classic fights mode or career mode Ko Rey Mo Beat Ko Rey Mo in the light heavyweight division
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You can submit a problem report for any non-working or fake code in the lists above.