┌────────────────────────────────────────────────────────────────────────┐ │ Amiibo NTAG215 Dump │ └───────────────────────────────────┬────────────────────────────────────┘ │ ┌──────────────────────────┴──────────────────────────┐ ▼ ▼ ┌─────────────────────────────────┐ ┌─────────────────────────────────┐ │ Fixed Data │ │ Unfixed Data │ ├─────────────────────────────────┤ ├─────────────────────────────────┤ │ • Tag UID │ │ • Custom Nickname │ │ • Amiibo Character ID │ │ • Owner Data │ │ • Factory Data │ │ • Game Progress / In-Game Stats │ ├─────────────────────────────────┤ ├─────────────────────────────────┤ │ Decrypted by: locked-secret.bin │ │ Decrypted by: unfixed-info.bin │ └─────────────────────────────────┘ └─────────────────────────────────┘ The Role of locked-secret.bin (The Tag Key)
The primary home for unfixed-info.bin is within applications like (for Android), PyAmiibo (a Python library), and Smash Amiibo Editor .
This key derives the security parameters needed to sign and decrypt the mutable or "unfixed" data. This covers all user-modified attributes, such as character nicknames, registration dates, owner profiles, and internal save game statistics (such as trained fighters in Super Smash Bros. or leveling data in The Legend of Zelda ).
unfixed-info.bin is a binary file containing a specific 80-byte . This key is crucial because Amiibo data is not stored in plain text; it is encrypted using AES-128 in counter mode.
The legally pristine method of acquiring these files involves dumping them directly from your own hacked Nintendo console (such as a launch-model Nintendo Switch running custom firmware like Atmosphere, or a modified Wii U/3DS). Homebrew extraction tools can pull the retail keys directly from the console's OS memory, where they are stored to facilitate normal Amiibo scanning. Internet Repositories (The Common Way)
Without unfixed-info.bin (and its counterpart locked-secret.bin ), you cannot write functional data to a blank NFC tag (NTAG215) that a Nintendo console will recognize.
This article is for informational purposes. Always back up critical data before deleting unknown files, and consult a cybersecurity professional if you suspect an active threat on your network.
To help you get your specific setup running, please let me know:
I can’t open or retrieve files directly. If you paste the contents of unfixed-info.bin (or a hex/text excerpt) here, I can help analyze, decode, or reconstruct it. If it’s a binary and you want guidance to extract its contents locally, tell me your OS and I’ll provide commands to inspect it (hexdump/xxd/strings/foremost/binwalk, etc.).
Learn how to to ensure it is valid.
Because these master encryption keys are the proprietary intellectual property of Nintendo, developers cannot legally pack them directly into their downloadable applications. Users must supply the keys themselves to activate full writing functionalities. How to Use the Key in Common Amiibo Apps 1. TagMo (Android)
┌────────────────────────────────────────────────────────────────────────┐ │ Amiibo NTAG215 Dump │ └───────────────────────────────────┬────────────────────────────────────┘ │ ┌──────────────────────────┴──────────────────────────┐ ▼ ▼ ┌─────────────────────────────────┐ ┌─────────────────────────────────┐ │ Fixed Data │ │ Unfixed Data │ ├─────────────────────────────────┤ ├─────────────────────────────────┤ │ • Tag UID │ │ • Custom Nickname │ │ • Amiibo Character ID │ │ • Owner Data │ │ • Factory Data │ │ • Game Progress / In-Game Stats │ ├─────────────────────────────────┤ ├─────────────────────────────────┤ │ Decrypted by: locked-secret.bin │ │ Decrypted by: unfixed-info.bin │ └─────────────────────────────────┘ └─────────────────────────────────┘ The Role of locked-secret.bin (The Tag Key)
The primary home for unfixed-info.bin is within applications like (for Android), PyAmiibo (a Python library), and Smash Amiibo Editor .
This key derives the security parameters needed to sign and decrypt the mutable or "unfixed" data. This covers all user-modified attributes, such as character nicknames, registration dates, owner profiles, and internal save game statistics (such as trained fighters in Super Smash Bros. or leveling data in The Legend of Zelda ). unfixed-info.bin
unfixed-info.bin is a binary file containing a specific 80-byte . This key is crucial because Amiibo data is not stored in plain text; it is encrypted using AES-128 in counter mode.
The legally pristine method of acquiring these files involves dumping them directly from your own hacked Nintendo console (such as a launch-model Nintendo Switch running custom firmware like Atmosphere, or a modified Wii U/3DS). Homebrew extraction tools can pull the retail keys directly from the console's OS memory, where they are stored to facilitate normal Amiibo scanning. Internet Repositories (The Common Way) or leveling data in The Legend of Zelda )
Without unfixed-info.bin (and its counterpart locked-secret.bin ), you cannot write functional data to a blank NFC tag (NTAG215) that a Nintendo console will recognize.
This article is for informational purposes. Always back up critical data before deleting unknown files, and consult a cybersecurity professional if you suspect an active threat on your network. The legally pristine method of acquiring these files
To help you get your specific setup running, please let me know:
I can’t open or retrieve files directly. If you paste the contents of unfixed-info.bin (or a hex/text excerpt) here, I can help analyze, decode, or reconstruct it. If it’s a binary and you want guidance to extract its contents locally, tell me your OS and I’ll provide commands to inspect it (hexdump/xxd/strings/foremost/binwalk, etc.).
Learn how to to ensure it is valid.
Because these master encryption keys are the proprietary intellectual property of Nintendo, developers cannot legally pack them directly into their downloadable applications. Users must supply the keys themselves to activate full writing functionalities. How to Use the Key in Common Amiibo Apps 1. TagMo (Android)