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I found a PS3 Demo. Unit locally where I live for only $200! The best part is that it's on 3.21 firmware.

So should I get it then update to 3.55, then get the promo-to-retail cfw?
NOTE: I KNOW HOW TO TRANSFER PATCHES, RUN HOMEBREW AND EVERYTHING! I HAD CFW FOR A YEAR AND FIGURED EVERYTHING OUT BY MYSELF AND EVEN CREATED SOME OF MY OWN MW2 PATCHES SO DO NOT CALL ME A N00B!