DS Bios Files Delta Download Bios7.Bin, Bios9.bin & Firmware.bin
The world of emulation has opened up endless possibilities for gamers who wish to relive their favorite classic games on modern devices. Delta Emulator, a popular choice among enthusiasts, allows users to play a wide range of games across different consoles. However, to fully enjoy the Nintendo DS games on your iPhone/iPad, you need specific BIOS files like BIOS7.bin, BIOS9.bin, and Firmware.bin. This guide will walk you through everything you need to know about these files, how to use them with Delta Emulator, and how to get started with playing your favorite DS games.


What is Delta Emulator?
Delta Emulator is a versatile emulator for iOS devices that supports various gaming systems, including Nintendo, Super Nintendo, Game Boy Advance, and Nintendo Switch. Developed by Riley Testut, it offers a user-friendly interface, customizable controls, and the ability to save and load game states. Unlike other emulators, Delta doesn’t require jailbreaking, making it accessible to a wider audience.
What Are DS Delta Files, and Is Installing the BIOS Necessary?
The Delta files refer to the Nintendo Emulator files essential for running DS games on iPhone and iPad devices using the Delta Emulator. These files include BIOS7.bin, BIOS9.bin, and Firmware.bin, which are crucial for the emulator’s operation.
Delta Files Explained:
The BIOS7.bin, BIOS9.bin, and Firmware.bin files play a fundamental role in making the Nintendo DS Emulator function correctly. These files essentially mimic the original Nintendo DS hardware, enabling the emulator to accurately replicate the console’s processes.
BIOS7.bin and BIOS9.bin handle the ARM7 and ARM9 processors, respectively, which are vital for game execution and system operations. The Firmware.bin file, on the other hand, manages the DS system’s software, including booting processes and hardware management.
Why BIOS Installation is Necessary:
Yes, it is necessary to install these BIOS files for the Delta Emulator to work properly. Without them, the emulator lacks the critical components needed to run DS games. These files ensure that the emulator can accurately simulate the DS environment,
allowing games to run as they would on the original hardware. Installing the BIOS is essential because the emulator relies on these files to execute games and handle the underlying system operations. The Nintendo DS Emulator cannot function without the BIOS files, making it impossible to play DS games on your device.
What Is the Nintendo DS BIOS?
The Nintendo DS BIOS (Basic Input/Output System) is a small but essential firmware that is stored in the console’s memory.
It provides the system’s core instructions needed to initialize hardware components, load games, and run basic system operations. Think of it as the “brain” that directs the DS to function.
In simple terms, without the BIOS, the console wouldn’t know how to manage tasks like loading the touchscreen, communicating with the CPU, or even turning on the device. This crucial code is integral for the console to boot properly and handle internal operations smoothly.
For emulators like DeSmuME or NO$GBA to emulate the DS experience accurately, they need access to a proper BIOS file.
Why Is the Nintendo DS BIOS Important?
The Nintendo DS BIOS is what enables your DS to function as a gaming console. It controls the communication between the system’s hardware, the operating system, and the game you’re playing.
The BIOS helps with initializing graphics, sound, touch input, and communication between the main processor and the auxiliary processor.
The BIOS file is just as essential for those using emulators to relive their favorite DS games. A proper Nintendo DS BIOS file ensures that emulators can run games as accurately as possible,
providing the same performance, graphical fidelity, and sound quality as the original console. It also ensures compatibility with various titles, especially those that require special hardware functions.
What is BIOS7.bin & BIOS9.bin in Delta?
BIOS7.bin and BIOS9.bin are essential BIOS files required to emulate the Nintendo DS system on the Delta Emulator. These files are crucial for replicating the original hardware environment of the DS, enabling the emulator to run games accurately and smoothly.
BIOS7.bin
Function: BIOS7.bin manages the ARM7 processor, one of the two main CPUs in the Nintendo DS. The ARM7 processor handles lower-level system operations such as input/output (I/O) processing, peripheral control, and audio functions.
Without this file, Delta Emulator cannot fully emulate these core functions, leading to potential game performance and compatibility issues.
BIOS9.bin
Function: BIOS9.bin, on the other hand, is linked to the ARM9 processor, the primary CPU of the Nintendo DS. This processor is responsible for executing game logic, graphics processing, and managing the more complex operations of the system.
BIOS9.bin ensures that these higher-level tasks are accurately simulated in Delta Emulator, allowing games to run as they would on the original DS hardware. Together, Bios7.bin and Bios9.bin work in tandem to emulate the dual-processor architecture of the Nintendo DS, making them indispensable for anyone looking to play DS games on Delta Emulator. Without these files, the emulator would struggle to replicate the original gaming experience, potentially leading to crashes, graphical glitches, or other issues.

BIOS7.bin
BIOS9.bin
our process
How to Fix Missing Required DS Files in Delta Emulator.
Delta is an iOS emulator that supports classic game systems like NES, SNES, N64, and DS. It works with popular controllers, including the Nintendo Switch Pro, PS4, and Xbox, and lets you sync saves across devices using Delta Sync with Google Drive or Dropbox. The emulator also offers custom controller skins, hold button shortcuts, fast-forward gameplay, and 3D/Haptic Touch support. In this guide, you’ll learn how to fix missing DS BIOS files in Delta Emulator to play Nintendo games on your iPhone or iPad.
Import the BIOS Files

To import BIOS files, go to Nintendo DS settings, tap on each missing file (bios7.bin
, bios9.bin
, firmware.bin
), A file browser will appear, allowing you to locate the downloaded files tap on each file to import it into the emulator. After importing all files, your Delta Emulator will be ready to run Nintendo DS games smoothly.

Delta DS Bios Files – Bios7.bin, Bios9.bin & Firmware Download (Latest 2025)

The Delta DS Bios Files, including Bios7.bin and Bios9.bin, and the associated firmware, are essential components for emulating or running Nintendo DS games on compatible software or hardware. These BIOS files provide critical system-level functions required for accurate emulation, while the firmware contains additional configuration data. Downloading these files ensures proper compatibility and performance for DS emulators. Always verify the source and legality of BIOS files, as they are proprietary to the original hardware.