According to the official documentation for the PyAmiibo project, the PyAmiibo library requires two master key files to function correctly for the encryption and decryption of Amiibo data: unfixed-info.bin and locked-secret.bin . These key files are fundamental to PyAmiibo‘s ability to parse NTAG properties, decrypt encrypted data stored on Amiibo figures, and re-encrypt modified data.
Review the list. If you see any old, unused, or sketchy apps with Drive access, click them and select . Step 2: Delete the File Safely
If you're building a full collection, organizing your Google Drive structure can save you hours: Root Folder : Keep your key_retail.bin (often a merged version of the two files), unfixed-info.bin locked-secret.bin Subfolders by Series : Organize your actual Amiibo
The use of platforms like Google Drive for malicious purposes is evolving, with attackers employing increasingly sophisticated methods that go beyond simple file hosting.
Instead of doing a generic Google search, use specific search operators to scan community hubs where active links are maintained. Paste these strings into your search bar: site:reddit.com "unfixed-info.bin" "google drive" site:://reddit.com "key files" Unfixed-info.bin Google Drive
Because of this, standard open-source hosting platforms like GitHub heavily police their repositories. If a user uploads these bin files directly to a public GitHub repository, Nintendo’s legal team quickly issues a DMCA takedown notice, and the repository is deleted.
If you use an application that stores its cache directly in a folder synced with Google Drive (such as a portable app on a USB drive that backs up to the cloud), that app might generate unfixed-info.bin as a legitimate temporary file.
Which (Windows, Android, macOS) are you using?
: Someone might have transferred the key file to Google Drive temporarily before moving it to a different system. According to the official documentation for the PyAmiibo
The file is a critical encryption key used primarily by the Android app TagMo and similar tools to read, decrypt, and write Nintendo Amiibo data to NTAG215 NFC tags.
Understanding Unfixed-info.bin on Google Drive: Purpose, Risks, and Solutions
Step-by-Step: How to Use the Key Files to Make Custom Amiibos
Together, these two files act as the digital passport control. Without them, emulation software and custom NFC writing apps cannot sign or format the data correctly, rendering your blank NFC tags useless to your Nintendo Switch. Why are these files hosted on Google Drive? If you see any old, unused, or sketchy
The file is a security key file required by NFC-writing applications, most notably TagMo on Android. It is essentially a digital key that enables the application to read and write to NTAG215 NFC tags.
If you have already deleted the unfixed-info.bin file but need it back for legitimate PyAmiibo use, recovery may still be possible:
Your custom tag is now permanently locked and formatted. You can tap it onto your Nintendo Switch right away, and the console will recognize it as an official, retail amiibo. Troubleshooting Common Errors "Keys Not Found" or "Missing Key" Error
After installing TagMo, open the app, tap the three dots in the upper-right corner, select "Load key(s) file", and navigate to where you saved both unfixed-info.bin and locked-secret.bin .