The problem? The game has never been re-released on modern consoles (PS4/PS5, Switch, or PC) due to licensing and source code issues. Thus, the is the definitive way to play in 2025.
These codes work on both real PSP and PPSSPP (via .ini cheat files). This gives you a "semi-custom" save file that feels like your own work. dragon ball z shin budokai 2 psp iso save data