PS1 Possible to Edit a PS1 Save File?

[Zik_39]

Is it possible to edit an existing save file for a PS1 game?

The game is Yu-Gi-Oh Forbidden Memories. I've beaten the game however there is one character that I did not unlock in my playthrough; Seto 2.

Would it be possible to edit my .psv save file to include this character in the lineup? Not sure if hex editing software like HxD would help here, I have it but I don't know how to find the values that I need to update.

 

[imkira3]

PSX save games can be converted to other formats, the people who made those programs might be worth asking about this. Chances are the gamesaves need to be decrypted first and they would know how. Decrypt, edit, encrypt, that's how you do it with PS3 saves, it's likely the same with PSX games. You might also try googling how to decrypt/encrypt PSX gamesaves directly. Of course, you will still have to figure out which values to edit, trial and error in a hex editor is your only good option. Fortunately, PSX gamesaves are quite small out of necessity and so you will have a much easier time of it than I did with PS3 gamesaves

 

[Berion]

PSV isn't save but save container. It can contains PSX or PS2 save.

PSX saves aren't encrypted. Those platforms was too weak to waste resources and time on such thing. At least I don't know any game which would doing that. Nearly all however, using checksums for securing save data and validating.

If you asking such question, you will not be able to find values you are interested in, checksum(s) type etc. For this, reverse engineer skills are mandatory. Maybe someone already wrote save editor for this game? I dunno, but worth to search on romhacking web pages like eg. RHDN and similar. Another route for consider would be cheats (RAM memory modifications) which are more common thing than save editors.