Unfixed-info.bin Jun 2026

To understand its role, you have to look at how Nintendo protects its data: Amiibos use these specific NFC chips. Encrypted Data: The data on these chips is locked.

For developers and security researchers, here is a real-world hex dump analysis from a confirmed legitimate unfixed-info.bin generated by Android Studio (version 2023.1):

Before we can understand unfixed-info.bin , it's important to grasp the fundamental structure of an Amiibo's data. Nintendo’s Amiibo figures are built on standard NTAG215 NFC chips, but a proprietary encryption system protects them from being easily cloned. Their memory is divided into two distinct areas that are handled differently by the console, which is where the unfixed-info.bin and locked-secret.bin files come into play.

These files must be present in the same directory as the script to decrypt or encrypt Amiibo dump files.

Many online guides mention loading unfixed-info.bin and locked-secret.bin into a variety of NFC writing apps, as the authentication process is standard across most Amiibo-related tools. unfixed-info.bin

In practice, most enthusiasts search for pre-extracted files online. Because the files are identical across all retail hardware, a single extraction works globally.

: Contains writable information that changes depending on player interaction, such as the custom Amiibo nickname, the owner’s Mii data, game progress, and character statistics (e.g., training data in Super Smash Bros. ).

In rare cases, this file can grow uncontrollably (to multiple gigabytes). This indicates a loop in AMD's diagnostic routines. Here is how to fix it: To understand its role, you have to look

Modern hardware tools like the , AmiLoop , or AllMiibo use Bluetooth or small screens to emulate hundreds of different figures on a single physical device.

This region contains static information that defines what the Amiibo actually is. It is permanently locked during the manufacturing process.

Let’s open the rabbit hole.

Let's put this to rest immediately: Here is the evidence: Nintendo’s Amiibo figures are built on standard NTAG215

Handles the decryption of the "core" identity of the figurine.

If you're asking about , you're likely looking to create DIY Amiibo cards . To "create an paper" version (physical card), you'll need to write the digital data onto an NFC chip and then attach it to a paper or cardstock backing. Essential Checklist To get started, ensure you have these items: Android Device : Must have NFC capabilities.

Because the UID is unique to every single physical tag, the cryptographic signature changes for every Amiibo—even if they represent the exact same character. Software tools use unfixed-info.bin to decipher how the unique hardware UID interacts with the standard character data. Common Use Cases and Applications

PyAmiibo is a Python library that provides tools for working with Amiibo data. It requires the unfixed-info.bin and locked-secret.bin master keys to decrypt and encrypt Amiibo data. The keys can be used as separate 80-byte binary files. However, PyAmiibo can also read these keys if they are combined into a single 160-byte file or even as a hexadecimal string separated by spaces.