Zombie Army Trilogy Switch Nsp Update

Zombie Army Trilogy on Nintendo Switch: The Complete NSP & Update Guide

Published: October 26, 2023 By: Switch Homebrew & Tech Desk

Rebellion Developments’ Zombie Army Trilogy remains one of the most visceral third-person shooters on the Nintendo Switch. Packing three campaigns from Sniper Elite V2’s undead offshoot, the game offers 15+ hours of co-op zombie slaughter. However, for users within the console’s homebrew and backup scene, understanding the correct NSP (Nintendo Submission Package) files and the latest update (UPD) is critical for a stable experience. zombie army trilogy switch nsp update

Step-by-Step Installation:

1. Backup your save data: Use JKSV or Checkpoint. The update will not erase saves, but it is good practice.
2. Locate the correct files:
   • Base Game NSP: Zombie.Army.Trilogy.Base.NSP (Size: ~6.8 GB)
   • Update NSP: Zombie.Army.Trilogy.Update.v1.1.0.NSP (Size: ~450 MB)
   • (Do not download "UPD" files smaller than 100MB – they are usually fake or corrupted)
3. Install via USB or SD Card:
   • Open DBI → "Run MTP Responder" → Drag and drop both NSP files into the "Install" folder.
   • Ensure "Install update" is checked.
4. Verify the installation:
   • From Switch Home Menu → Highlight Zombie Army Trilogy → Press + → Software Update → "Version 1.1.0".
5. Launch with Sigpatches: If you get a "Unable to start software" error, update your sigpatches via the latest release from the usual sources.

What is the Latest Version?

As of Q4 2023, the current version of Zombie Army Trilogy on Switch is Version 1.2.0. Zombie Army Trilogy on Nintendo Switch: The Complete

This update is mandatory for users who want the full experience, as the base 1.0.0 release shipped with several performance issues. Backup your save data: Use JKSV or Checkpoint

Q4: I installed the update, but Horde Mode is still locked. Why?

Horde Mode unlocks after completing the first three chapters of Campaign 1. The update does not auto-unlock it. Use a 100% save file if you want immediate access.

Resolution and Frame Rate

• Docked Mode: The game targets a dynamic resolution, hovering around 720p - 900p. It targets 30 FPS but frequently drops during particle-heavy explosions (triggering the "X-Ray kill cam").
• Handheld Mode: Resolution drops significantly to maintain stability, often sitting at 540p-640p. The smaller screen mitigates the low resolution, but the frame rate drops are more noticeable here than in docked mode.

Multiplayer error: “The software closed because an error occurred.”

• Cause: Mismatched update versions between you and your co-op partner.
• Fix: Ensure all players have the same update version (v1.0.2 recommended). Also disable any cheats/mods.

Step-by-Step Installation

1. Place both NSP files on your SD card (e.g., sdmc:/nsp/) or prepare to install over USB/network.
2. Open your NSP installer (Tinfoil is recommended).
3. Navigate to the update file (not the base game).
4. Select “Install” – the installer will detect that the base game is already present.
5. Confirm installation – It will overwrite the necessary files. Size of update v1.0.2 is ~250 MB.
6. Launch the game – From the Switch home menu, you should see the version number displayed on the title screen (bottom right).

Important: Do not delete the base game after installing the update. The update is a delta patch – it requires the original files.