I tracked down a copy of VF 4 Evo Korea and the following RAW codes for 480p
Virtua Fighter 4 Evolution (Korea)
//Enable
20100234 24110000
20100244 24130001
201004EC 24160002
201004F4 000793C3
201007D8 24840032
20100784 00000000
203A3C78 0C0E91D4
203A3CD4 00101540
203A4300 0C0E76A0
203A4304 3C056071
203A4308 34A52435
203A430C 00052C38
203A4310 34A57160
203A4314 00052C38
203A4318 34A53524
203A431C 0C0E76A0
203A4320 24040044
203A4324 24050001
203A4328 0C0E76A0
203A432C 24040045
203A4330 080E924D
203A4334 0000202D
203A47D0 3C020200
203A47D8 00621025
203A4904 24050000
203A4928 0C0E90C0
203A4970 00111D40
//480P code
20100238 24120050
203A8010 248401B8
Cheat Device is able to boot into the PS2 bios, but gets a black screen when trying to load OPL. However, resetting (as opposed to powering off) the PS2 keeps the codes in memory allowing you lauch OPL and successfully boot the game. I have to say I’m a bit disappointed, whatever resolution the backbuffer uses is clearly lower than the arcade version. IMO, a good deinterlacer produces a more pleasing result. Using a CRT or emulating at higher resolutions with PCSX2 are options as well.