You're looking for a Tekken 3 save file with all characters unlocked for the PlayStation (PS1, not PSV, which is a different console).
: The tiny, fire-breathing manga dinosaur exclusive to the console version. Prerequisites
Locate the file named SCEVMC0.VMP (Slot 1) or SCEVMC1.VMP (Slot 2).
Tekken 3 remains one of the greatest fighting games of all time. Originally released for the PlayStation 1, many gamers now enjoy this classic on the PlayStation Vita (PS Vita) and PlayStation TV (PSTV) using the native PSP emulator, Adrenaline.
I can help you find: The best PS1 emulators for Vita Instructions for using VitaShell Troubleshooting save file errors Just let me know what you need!
Most "All Unlocked" files didn't start as .psv files. They began their life in the late 90s as .mcr (Memory Card Raw) files. These were physical dumps from memory cards. Hardcore players in the PS1 era physically extracted their completed saves onto PCs.
: You may need to convert the file to a PSP-compatible format using tools like the WSE PS1 Save Converter.
Disconnect your PS Vita from the computer and launch Adrenaline. Open Tekken 3. Go to the main menu and select . Load the data from Memory Card Slot 1.