Shin Megami Tensei Iv -undub- 3ds -decrypted- Rom -

Title: Shin Megami Tensei IV – UNDUB (3DS Decrypted ROM) – Full Japanese Voice Mod + English Text

Body:

After some digging, I finally got the UNDUB version of Shin Megami Tensei IV working on Citra and real 3DS hardware. For those unfamiliar, this version keeps the original Japanese voice acting while retaining the official English text and UI. The official release only had English dubbing (no dual audio option), so this is a huge plus for purists.

Details:

How to run:

Note: This is a fan-made UNDUB patch applied to the base ROM – no official release exists. You’ll need the original game ROM (USA or EUR) and apply the patch, or find a pre-patched decrypted version.

Performance: Works flawlessly on Citra (AAC build recommended) and on New 3DS/2DS. Some old 3DS models may have minor audio sync issues in heavy cutscenes, but overall fine.

Where to find:
I can’t post direct links here due to rules, but search for “SMT IV UNDUB hacks.3ds” or check the usual archive sites. The patch is also available on Romhacking.net (search “Shin Megami Tensei IV Undub”).

Pro tip: For the best experience, use the HD texture pack with Citra – the 3DS resolution doesn’t do the art justice.

This text describes a specific version of Shin Megami Tensei IV

for the Nintendo 3DS, modified for use with emulators like Citra. Breakdown of Terms Shin Megami Tensei IV Shin Megami Tensei IV -UNDUB- 3DS -Decrypted- ROM

: The base game, a popular post-apocalyptic RPG developed by Atlus.

-UNDUB-: This refers to a modified version of the game that replaces the English voice acting with the original Japanese voiceovers while keeping the English text and menus.

3DS: The original platform for which the game was developed.

-Decrypted-: A standard .3DS ROM file is usually encrypted to prevent piracy. A "decrypted" ROM has been processed so it can be read and played by emulators (like Citra) without needing extra system keys. ROM: The digital file format of the game cartridge. Typical File Description

If you are organizing your library or searching for information, this specific file is the Japanese-voiced English version of the game, pre-patched and ready for PC or Android emulation.

Which of these would you like?

This report outlines the technical and functional aspects of the Shin Megami Tensei IV -UNDUB- 3DS -Decrypted- ROM , a community-modified version of the 2013 RPG developed by Overview of the "Undub" Format

The "Undub" modification targets players who prefer the original Japanese vocal performances while retaining English text for accessibility. Vocal Replacement

: Replaces the English voiceovers with the original Japanese audio files. Text Preservation

: All menus, dialogue boxes, and UI elements remain in English. Patch Content : Modifications typically include updated files that house the audio assets. Technical Specifications Decrypted Status Title: Shin Megami Tensei IV – UNDUB (3DS

: A "Decrypted" ROM has had its native Nintendo 3DS encryption removed, making it compatible with PC emulators like Citra/Azahar File Format : Usually found in

files are standard for installation on hardware via custom firmware like : The base game is approximately

(13,747 blocks); however, undubbed versions may vary slightly due to audio file differences. Region Compatibility : Most patches are designed for the USA version 00040000000E5C00

). Users of the European version must often rename folders to the EUR TitleID ( 0004000000141C00 ) to ensure compatibility. Key Game Features Press Turn System

: A high-stakes combat mechanic where exploiting enemy weaknesses grants extra actions, while missing or being blocked loses turns. Smirk Status : A unique mechanic in

that provides offensive and defensive bonuses after successful tactical plays. Demon Fusion : Includes over 400 demons

to recruit, negotiate with, and fuse into more powerful entities. Multiple Endings : The story features four distinct paths— Law, Chaos, Neutral, and Nihilism —determined by player choices throughout the game. Common Implementation Issues

The Shin Megami Tensei IV -UNDUB- 3DS -Decrypted- ROM is a modified version of the original Nintendo 3DS role-playing game that replaces English voiceovers with the original Japanese audio while retaining English text for subtitles and menus. This "decrypted" format is specifically designed for use with the Citra 3DS Emulator on PC, as it allows the emulator to access the game's data without needing the console's internal decryption keys. Key Features of the Undub Version

Original Japanese Audio: Experience the performance of the original Japanese voice cast, which some players prefer for its tonal consistency with the game's setting.

English Subtitles: All dialogue, menus, and story descriptions remain in English, ensuring the game is fully playable for English speakers. Platform: 3DS (Citra / CFW 3DS) Format: Decrypted

Decrypted Format: Ready for immediate use in emulators like Citra without requiring additional decryption tools. Playing on Citra Emulator

To run this ROM on the Citra emulator, follow these general steps:

Preparation: Download all parts of the ROM (if it is split) and extract them using a tool like 7-Zip or WinRAR.

Installation: Open Citra and navigate to File > Load File to select the extracted .3ds file.

Enhancements: You can improve the visual experience by applying HD Texture Packs available through community forums.

Configuration: For optimal performance, ensure your internal resolution is set higher than the native 3DS resolution (e.g., 3x or 4x) to sharpen the 3D models. Game Overview

2. Technical Background

| Component | Description | |-----------|-------------| | Encryption | 3DS titles are encrypted with a combination of AES‑CTR and RSA using per‑title keys stored in the console’s secure module. The keys differ per region (e.g., 0x00040000 for US, 0x00048004 for JP). | | Dumping | To obtain a clean copy, a home‑brew tool (e.g., GodMode9, 3DShell, FBI) reads the cartridge’s NAND and writes the raw binary. The dump includes a header (NCCH) that flags the encryption status. | | Decryption | Tools such as 3DScrypt, Decrypt9WIP, or Citra’s built‑in decrypter (when running the dump through the emulator with proper keys) strip the encryption, outputting a decrypted NCSD/NCCH structure. The result is a set of ARM9/ARM11 binaries, exefs, romfs, and asset archives (e.g., .szs compressed files). | | Undubbing Process | 1. Identify voice files – In SMT IV they reside in romfs/voice/jp/ as .bcwav and .bcstm. 2. Remove or replace – Deleting the directory or swapping it for a placeholder reduces size. 3. Re‑pack – The modified romfs is re‑compressed (szs tools) and the NCCH header is updated. 4. Re‑sign – The final ROM must be signed with a valid title key (or a dummy key if used only on emulators). | | Resulting Size | The original US version is ~1.05 GB. After undubbing, the ROM typically shrinks to ~970 MB, a ~7 % reduction. The smaller file loads marginally faster on low‑end 3DS hardware and on PC emulators such as Citra. |

Note: The steps above are provided only for educational insight into how ROMs are structured and how fan projects manipulate them. The actual distribution of copyrighted ROMs, decryption keys, or tools that bypass Nintendo’s security is illegal in most jurisdictions.

What It Is

This is a fan‑patched version of the official Shin Megami Tensei IV (3DS) that restores the original Japanese voice track while keeping the English text/localization. The “Decrypted” format means it works directly with emulators like Citra or on real 3DS hardware with custom firmware (Luma3DS, etc.), without needing extra console‑specific decryption.

2. On PC with Citra (Best for Graphics)

Citra, the open-source 3DS emulator, received a "Vulkan" backend update that dramatically improves performance for SMT IV.