Unfixed-info.bin

In the context of creating custom clones, is a critical decryption "key" file required by software like TagMo or AmiiBoss to process Amiibo data. What is unfixed-info.bin?

Grants software platforms the ability to register and spoof an official tag format for Nintendo Switch or 3DS platforms.

Understanding how unfixed-info.bin works requires diving into the structural anatomy of an Amiibo, the mathematics behind its encryption, and the practical steps needed to use it for custom NFC tag creation. The Anatomy of Amiibo Encryption

Due to copyright laws, backup applications do not come bundled with unfixed-info.bin or locked-secret.bin . Users must extract them from their own hardware or locate them independently online. Modern iterations of these keys are sometimes compiled into a single file named key.bin , which combines the assets of both legacy files. 2. Importing into Software Once you have the files on your device: Open your preferred Amiibo tool (e.g., TagMo).

Popular open-source tools—such as (for Android), AmiiBomb (for PC), and various flipper or microcontroller scripts—allow users to back up their physical Amiibo collections or write backup files (.bin files) to blank NTAG215 tags. unfixed-info.bin

When you create a backup of an Amiibo, you generate a 540-byte raw data dump. However, because this dump is encrypted, tools like TagMo (Android), Ally (iOS), or AmiiBomb (PC) cannot interpret the bytes.

To manipulate this data, two corresponding master keys are required: Key File Name Cryptographic Purpose Core Responsibility Tag Master Key

Information that changes based on use, such as game-specific save data, nicknames, or leveling stats.

🛠️ The Twin-Key Architecture: How unfixed-info.bin Works In the context of creating custom clones, is

: The standard software used to "burn" Amiibo data.

Nintendo utilizes Near Field Communication (NFC) technology inside Amiibo figures and cards, relying strictly on . These chips contain 540 bytes of raw storage data. To prevent unauthorized cloning and data manipulation, Nintendo splits the data structure into different security tiers:

This includes read-only attributes like the character type, series, and unique identifier (UID). The cryptographic signature for this area is derived using the locked-secret.bin key.

. According to documentation from the AmiiboDB project, this small binary file (typically 80 bytes in size) serves a very specific purpose: it contains the master keys required to access and manipulate the "unfixed/unlocked information" of the Amiibo. This dynamic, unfixed portion includes changeable elements like the Amiibo's nickname, the assigned owner’s name, and any game-specific progress or stat data saved to the figure. Understanding how unfixed-info

This comprehensive article explores what this file is, its role in data management, why it remains "unfixed," and how to handle it safely. What is a .bin File?

While AMD is the prime suspect, unfixed-info.bin can theoretically appear from other software, though rarely:

Before diving into code, let's analyze the nomenclature itself. File names are rarely random; they describe the file’s purpose.

Disclaimer: This article is based on collective user diagnostics and publicly available driver behavior as of 2025. AMD may change file naming conventions in future releases. Always refer to official vendor documentation for critical systems.

Point the app to both files. Once the app shows "Keys Found" or a green checkmark, you are ready to scan and write tags. ❓ Frequently Asked Questions