i hope it's cool to post links:
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if it doesnt already take you to post 5, scroll down to the fifth one.
this link right here taught me how to use the Disc-Swap Update Bypass.
baisically it tells you the same thing i told you originally,
but other people have reported different games work as well.
apparantly,
Full Auto 2, and
Formula 1 EU also have this exploitable glitch.
they require different methods though, so read the testimonial from
FoneFreak, and
ps3news (the one at the bottom)
I'm now having some problems with this glitch.
I can't figure out what the problem is though.
I will post a new thread on this topic.