This is the more complex path, but entirely possible. It requires a specific piece of homebrew software and a flash drive. Since the PS2 cannot natively read files from a USB drive, you'll need to use a boot disc to run homebrew software that can.
The entire "Devil Within" mini-game finished, unlocking related bonuses. tekken 5 save data ps2 updated
Transfer .cbs save files via a FAT32 USB drive directly using the CodeBreaker device manager menu. How to Import Save Data to PCSX2 (Emulator) This is the more complex path, but entirely possible
This is a third-party user-created save, not an official update from Bandai Namco. This is the more complex path
A method to transfer files (e.g., PS2 FreeMcBoot with uLaunchELF, or a USB transfer device like Max Drive). Step-by-Step Installation