Unfixed-info.bin (2024)

unfixed-info.bin is a critical decryption key used primarily in Amiibo cloning and backup software like for Android or What is it used for?

Amiibos utilize Near Field Communication (NFC) technology. Specifically, Nintendo uses chips, which have a storage capacity of 540 bytes.

This file contains information regarding the specific data structure, character identification mappings, and dynamic data parameters.

Emulation tools look for two specific files to bypass this security: unfixed-info.bin

This is the most critical question. By itself, the filename unfixed-info.bin is . Reputable antivirus databases (VirusTotal, Malwarebytes, Windows Defender) do not list this exact name as a threat.

The locked-secret.bin operates similarly. It is a , used to derive Amiibo-specific tag keys for signing the fixed/locked information of the Amiibo, like the UID and Amiibo type.

unfixed-info.bin

To clarify its specific function, it's best to understand it in relation to its counterpart, locked-secret.bin :

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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

Nintendo designed Amiibo to be both secure and functional. The NTAG215 NFC chips inside the figures use a proprietary encryption system that Nintendo controls. This system splits Amiibo data into two categories:

These files are not provided with the applications themselves, meaning users must obtain them separately.

Help you find a reliable, current GitHub or Reddit repository for the files. This file contains information regarding the specific data

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

Note: As of mid-2026, some older guides on Reddit (like r/LinksAmiiboArchive ) still provide valid repositories for setting up these keys, alongside updated Amiibo data dumps. Troubleshooting unfixed-info.bin