Virtua Fighter 4 Arcade cheats

Hello fighting game fans, I hope I’m posting in the right place.

I have a question about Virtua Fighter 4 Arcade version: how can I access the original VF1 blocky character models in the game? I couldn’t find this info searching on the web. I know these are in the game as I remember seeing videos of them online. So if anyone knows how to unlock these in the game (via a cheat code or a button combination), please let me know.

Just to be clear I am asking about the arcade version of VF4 (Any revision or region), not the PS2 version.