Nintendo uses standard embedded inside the base of every Amiibo figure. These chips have a fixed storage capacity of 540 bytes, divided into specific data sectors. To prevent counterfeiting and data tampering, Nintendo encrypts these sectors using a combination of static keys and dynamic signatures.
The unfixed-info.bin file contains the specific cryptographic keys needed to unlock and decrypt the modifiable, "unfixed" partition of the Amiibo data structure. Conversely, locked-secret.bin holds the keys responsible for decoding the hardcoded identifier segments. Newer setups often combine these two separate components into a singular file named key_retail.bin .
This section holds the character ID, series ID, and release info. It tells the Nintendo Switch exactly which character is being scanned (e.g., Link vs. Mario). Unfixed (Dynamic) Data unfixed-info.bin
Technically, is a 160-byte binary file containing the cryptographic keys needed to handle the "unfixed" or "unlocked" data sections of an Amiibo.
Certain PC games, particularly those with complex modding frameworks (e.g., The Elder Scrolls V: Skyrim with SKSE, Minecraft with Forge, or Kerbal Space Program ), generate unfixed-info.bin as a temporary patch file. Nintendo uses standard embedded inside the base of
Understanding unfixed-info.bin: The Key to Amiibo Decryption and Backup
Is it true? Almost certainly not. But it’s a great story. The unfixed-info
Understanding unfixed-info.bin : A Guide to Amiibo Data Decryption
It allows you to modify the data (like changing the owner) and re-encrypt it to a new tag. Where to Find unfixed-info.bin
The unfixed-info.bin file is a specialized used by software applications to decrypt and encrypt Amiibo data.