Unfixed-info.bin

If your 3DS is failing to boot or System Settings is crashing, checking the integrity of this file is a standard troubleshooting step. Because the file is not "fixed" (meaning it can be modified or updated separately from the core OS), it can sometimes become corrupted during a bad transfer or a sudden power loss while saving.

: This occurs when the file is incorrectly named or placed in the wrong directory. Ensure the filename is entirely lowercase.

unfixed-info.bin is one of two essential encryption keys required by Android and iOS applications to read, backup, and create DIY Amiibo clones. What is unfixed-info.bin?

The files are named exactly unfixed-info.bin and locked-secret.bin (all lowercase, matching extensions).

Here's a step-by-step guide on how to load the unfixed-info.bin file into TagMo: unfixed-info.bin

In 90% of cases, unfixed-info.bin is a temporary file and can be deleted without consequences.

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

Professional data recovery tools (like TestDisk, PhotoRec, or R-Studio) create working binary files during deep scans. When a recovery process is interrupted (or "unfixed"), the software may leave behind a unfixed-info.bin containing the partial scan map of a damaged drive.

In the background of modern emulators and writing tools, these two keys are parsed simultaneously. The original reverse-engineered cryptography tool, known as amiitool on GitHub , frequently requires users to combine these files into a unified signature map by concatenating them together (e.g., executing cat unfixed-info.bin locked-secret.bin > key_retail.bin ). 📲 Setting Up Keys in Emulation and Writing Apps If your 3DS is failing to boot or

In practice, these tools cannot decrypt or manipulate raw Amiibo data dumps (BIN files) without the master keys. The user must first load unfixed-info.bin and locked-secret.bin into the application. This process provides the tools with the fundamental keys to properly interpret any raw.bin dump taken from a physical figure.

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

The file is a critical cryptographic decryption key used by emulation software to read, modify, and clone Nintendo Amiibo data. Alongside its counterpart, locked-secret.bin , this file contains proprietary decryption keys required by applications like TagMo on GitLab to bypass Nintendo's retail encryption. Without it, applications cannot parse the raw data within an Amiibo .bin dump file.

on iOS, this small piece of data is the "skeleton key" needed to make the whole process work. 🔑 What is unfixed-info.bin? unfixed-info.bin file is one of two essential decryption keys (the other being locked-secret.bin ) used by Nintendo to secure Amiibo data. Encryption: Ensure the filename is entirely lowercase

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: Bluetooth-enabled hardware tags that store multiple Amiibo profiles. They require the keys during the initial database setup via their companion mobile apps.

Raw Amiibo Dump (.bin) ──> Requires ──> [ unfixed-info.bin ] ──> Decrypts Game Progress & Stats ──> Requires ──> [ locked-secret.bin ] ──> Decrypts Character Identity Step-by-Step Implementation Guide