Unfixed-info.bin Guide

Some older versions of software specifically look for unfixed-info.bin (with a hyphen) while others look for unfixed_info.bin (with an underscore). Check your app’s documentation to see which naming convention it prefers. Legal and Ethical Note

Grants software platforms the ability to register and spoof an official tag format for Nintendo Switch or 3DS platforms.

Nintendo’s Amiibo chips utilize an internal format divided into distinct security sections. To read or duplicate this data, software requires two complementary cryptographic files:

Understanding unfixed-info.bin: The Key to Amiibo Decryption and Backup unfixed-info.bin

TagMo expects specific filenames; ensure they are not renamed to .txt or other formats.

If you have ever looked into backing up your Amiibo collection or duplicating figures using NTAG215 NFC tags, you have likely encountered the term . This tiny but critical file is one half of the proprietary encryption key pair required by software like TagMo to read, decrypt, and write Amiibo data.

: In some modern apps, these two files are merged into a single file often named key_retail.bin . Why You Need It Some older versions of software specifically look for

: Because these files contain proprietary Nintendo encryption data, they are not included with software and must be sourced by the user. Lanjelin/AmiiboConverter: Convert, duplicate ... - GitHub

Without these keys, standard NFC writing apps cannot read the encrypted contents of an Amiibo .bin dump or properly format a blank tag to be recognized by a Nintendo console. Key Components for Amiibo Cloning:

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: Nintendo’s Amiibo chips utilize an internal format divided

: Once keys are loaded, the app can interpret Amiibo .bin dumps and write them to compatible NFC hardware . Shvier/TagMoUnlockFiles - GitHub

A genuine unfixed-info.bin is extremely small (typically only 160 bytes ).

To get started, you will need to place three types of files on your Android device (typically in a folder like Downloads or a dedicated Amiibo folder):

Loading unfixed-info.bin into your chosen software achieves three main functions:

What it is