Obtain a .mcr (memory card) file named something like TEKKEN3.mcr . Rename it to SCES01264.mcr (the European version) or SLUS00402.mcr (USA version) – check your Tekken 3 region.
If you use the wrong region save, the PSVita will say "Corrupted Data."
Look for saves by users like or WLau that explicitly state "All characters and modes unlocked".
The search term "Tekken 3 save file PSV hot" is trending for a few reasons:
The PS Vita community has seen a massive resurgence due to custom firmware (CFW) and emulation. Many players are now running (a native PS1/PSP emulator for PSV). This has made transferring classic save files easier than ever, leading to a spike in searches for "hot" (currently popular/verified) save files.

