The directory is usually Internal Storage > PSP > SAVEDATA .
The Ultimate Guide to Dragon Ball Z: Shin Budokai 2 PSP Save Data dragon+ball+z+shin+budokai+2+psp+save+data
That is where a "Save Data" file comes in. By using a 100% completed save file, you can bypass the story mode and jump straight into high-tier battles with a fully unlocked roster. Why Use a 100% Save Data File? The directory is usually Internal Storage > PSP > SAVEDATA
Ensure your save file matches your game's region. Common IDs include: ULUS-10234 (North America) ULES-00789 (Europe) Why Use a 100% Save Data File
Use a Mini-USB cable to connect your PSP to your PC or insert your Memory Stick into a card reader.
You don't always need to start a match at base power. As noted in GameSpot’s cheat guide, you can start a match in a transformed state by holding the R button while selecting your character.
Instantly unlock all 24 characters and their various transformations.