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.

Without additional context (such as which software, game, or device generated it), here is the general technical meaning and common scenarios where this type of file appears.

In the world of handheld gaming and NFC (Near Field Communication) technology, certain file names carry a legendary status. Among enthusiasts of Nintendo’s Amiibo platform, is perhaps the most critical piece of data.

The data master key from unfixed-info.bin is used to derive several Amiibo-specific data keys. These child keys are then responsible for: unfixed-info.bin

When you tap an Amiibo to your console, the system uses different keys to read different parts of the figure. The unfixed-info.bin acts as the master key for the static portion. It works in conjunction with its partner, locked-secret.bin , which handles the dynamic portion. Together, these two files allow software to decrypt, read, and modify official Amiibo data.

Moreover, the lack of transparency regarding unfixed-info.bin 's functionality poses challenges for cybersecurity professionals and researchers. Without a clear understanding of its purpose, it becomes difficult to assess its impact on system security, making it a potential blind spot in threat analysis and incident response.

Without knowing its origin, purpose, or safety (e.g., it might be part of a specific application, a malware sample, or a log artifact), any review would be speculative and potentially misleading. If you encountered this file on your system, I recommend scanning it with updated antivirus software and checking its parent application’s documentation. If you meant a different product or file, please provide more context (e.g., where it came from, what it’s supposed to do). When you create a backup of an Amiibo,

This key decrypts and validates the immutable or "locked" aspects of the tag. This includes the factory-written 7-byte Unique Identifier (UID) and the specific character identification data. The Role of unfixed-info.bin (The Data Key)

: It is used to derive specific data keys for signing and encrypting dynamic information like the Amiibo name , owner details , and in-game progress .

) required to decrypt and write Amiibo data to NFC tags using applications like In the world of handheld gaming and NFC

Understanding unfixed-info.bin: The Key to Amiibo Emulation and Backups

: The app reads the raw dump and applies the keys.

Which (e.g., TagMo, Amiitool, a web manager) are you trying to use? What hardware or phone model are you working with? Are you currently encountering a specific error message ?