Unfixed-info.bin ((exclusive)) [DIRECT]

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?

Nintendo protects the data on its physical figures using a mix of fixed hardware properties and encrypted internal storage. The data structure of an Amiibo is divided into two distinct zones:

This dual-layer encryption ensures that both the static identity and the dynamic progress data of an Amiibo are properly protected and authenticated. unfixed-info.bin

Every physical Amiibo contains an embedded NFC chip that communicates with consoles like the Nintendo Switch, Wii U, and 3DS. To prevent users from simply rewriting the data to give themselves infinite in-game rewards or spoofing rare characters, Nintendo implemented a mix of standard NTAG215 hardware protections and proprietary encryption.

The unfixed-info.bin file is far from a random binary. It is a critical, specialized security key that enables the decryption of the permanent data stored on an Amiibo. It is an essential component for any third-party tool designed to interact with or emulate these figures. By understanding its purpose—to handle the static, "fixed" portion of an Amiibo's identity—you can better understand the technical complexity behind these small, interactive figures. unfixed-info

Distinguishes between a figure, card, or yarn plush. The Role of HMAC and Key Generation

: This file contains data patterns used to decode the unique, non-static parts of the Amiibo chip. Every physical Amiibo contains an embedded NFC chip

: The character's internal identity code, production series, and global data structures that never change.

: This file contains the keys used to decrypt the fixed, core data structures common across all Amiibos.