Instead of a save file, you can use Dolphin’s built-in to unlock all content. Example code (for NTSC-U):

Search for . Look for descriptions indicating "100% unlocked," "All characters," or "Attitude Era complete."

WWE '13 features one of the most celebrated rosters in wrestling game history, focusing heavily on the Attitude Era. However, many of the best characters, championships, and arenas are locked behind the lengthy "Attitude Era" campaign mode.

Yes. Use a Homebrew app like SaveGame Manager GX to extract your real Wii’s save to an SD card, then copy it to Dolphin’s NAND folder.

Unlocking content manually in WWE '13 requires completing extensive single-player campaigns. A downloadable save file offers immediate benefits: