One Piece Pirate Warriors 4 NSP Update & DLC: The Ultimate Guide to Make Everything Work

Last Updated: [Current Date] Target Console: Nintendo Switch (CFW / Atmosphere / Ryujinx / Yuzu)

• Updating firmware + sigpatches
• Reinstalling the update before DLC
• Ensuring no corrupted tickets using DBI or Tinfoil

3. Known Issues & Workarounds

• “Software closed because of an error” – Usually fixed by:

  In-Game Progress Unlock: Some characters or missions, like Charlotte Katakuri, require you to complete specific story chapters (e.g., Dramatic Log Chapter 1) before they are unlocked, even if the DLC is installed.

  Summary Checklist

  • [ ] Base Game Installed
  • [ ] Update Installed (Must be newer than base version)
  • [ ] DLC Installed
  • [ ] Console Rebooted
  • [ ] SigPatches Applied

  Following this order should resolve the black screen on launch and make all characters playable!

  Part 4: Troubleshooting – Why Isn’t It Working?

  Even following the steps, users run into errors. Here are the solutions for the most common "NSP update DLC not working" scenarios.