A simple save decryption, encryption and conversion utility for P5S PC.

• Locate SAVEDATA.BIN under %AppData%\SEGA\Steam\P5S.

• Get the SteamID64 associated with the account under which the save was created.

  The last segment of SteamID3 will also work ([U:1:<last_segment>]).

• To decrypt or encrypt the save:

  p5spc.saveutil.exe crypt --input </path/to/SAVEDATA.BIN> --steam <SteamID64>

Example - encrypted save above, decrypted below:

Supported save formats: Switch_JP / Switch_EN / PC.

• Decrypt a PC save (SAVEDATA.BIN), or dump a save from Switch (savedata).

• The source format will be auto-detected.

• To convert:

  • Switch JP/EN save to a PC save:

    p5spc.saveutil.exe convert --input <path/to/savedata> --target PC

  • Switch JP save to a Switch EN save:

    p5spc.saveutil.exe convert --input <path/to/savedata> --target Switch_EN

  • Etc.

Example - Switch JP save converted to PC save: