It's very hard to do on the ps3 without using the USB cable...as SOON as the controller turns off...turn it back on and AS SOON AS ITS BACK ON, HOLD (Don't tap!) L1, L2, L3, , and O at the same time..you'll know it worked if the legal info screen is bright purple text
ok found out how its done from a helpful bod on the ign boards
orignally posted by Justin_Dailey here
i basically plugged in the usb cable and started the game. watch the led that bilnks for port1 - it will turn off while the ps3 switches to ps2 mode. straight away press the PS button and controller shud synch up. then immediately press and hold L1+L2+L3 and Square and Circle at the same time. keep it held down and the next splash screen shud be bright purple thats it!
game appears noticeably sharper than standard 480p prog scan on my Bravia.
Will this work on the PAL version? Maybe the reason it's release has been delayed here is that they are building it into the game? Even if it does work on the PS2 will it work on a PAL PS3 with software emulation?
i hate developers that put things in like this that need activating every damm time you play it, why not just have the option within the game?, i bet half the people that buy it for PS3 won't even know about the HD mode unless they print in the manual or something, making it pointless rather than a bonus for the majority