This happens when there is a mismatch between the game ISO region and the save data region. Ensure your ISO and save file share the exact same code (ULUS vs. ULES).

Internal Storage \ PSP \ SAVEDATA (or inside the custom folder set in emulator settings) Files app \ On My iPhone \ PPSSPP \ PSP \ SAVEDATA

Open the PSP drive on your PC and go to the PSP folder, then open SAVEDATA .

Access SSJ4 Goku, Majin Vegeta, and Super Vegito immediately.

Always back up your existing save files before copying new files into the SAVEDATA folder to prevent losing your personal progress.