Hello everyone, don't think this was posted before, but found out how to save and replace saves from and to PS4-PS Vita for Persona Dancing (3, 5 & possibly 4). Normally, the cross-save function baked in the games require PSN, so this is a way to get around that.

Requirements:​

• Both PS4 & PS Vita need to be hacked/jailbroken. Firmware doesn't matter, game versions don't matter either.
• For PS4: Apollo Save Tool
• For PS Vita: VitaShell

Copying and replacing the saves​

• Open Apollo Save Tool > HDD Saves > Persona X Dancing.
• Export Decrypted Save Files and select your USB drive.
• Apollo will create a folder on the USB drive (PS4 > APOLLO). The save file should be called SYSTEM.DAT.
• Simply rename SYSTEM.DAT to system.bin (make sure you do rename the extension dat to bin and not system.bin.dat).
• Copy the save to your Vita (any folder).
• On PS Vita make sure you open the game and wait until it makes a save. You need a save to be created so it can be replaced.
• Open VitaShell and navigate to ux0 > user > 00 > savedata.
• Once you see your game ID, press Triangle button > Open decrypted.
• Copy and replace system.bin.
• Done.

Final notes:​

• Note that "Checking DLC content" will show again on your Vita. A bit annoying if you have all of them, you will have to spam X. This is only a first time issue tho.
• To do the same but from Vita to PS4, just follow the tutorial but backwards.

 

[FLRIZDARKK]

Edit: This guide can work with not just Persona games. Every game that will follow similar structure on both systems (PS4 and Vita) will work most likely.

 

[SMVB64]

Huge thank you, man! This is exactly what I was looking for. For persona 4 dancing all night - to unlock the hardest difficulty you have to play through this extremely long story mode.

I just got a 100% save on vita and transferred it to Ps4 and works like a charm!