| File Name | Purpose | Deals with... | | :--- | :--- | :--- | | | Contains the key for the static , permanent information of an Amiibo | The Amiibo's fixed identity, including character, series, and a unique identifier that never changes. | | locked-secret.bin | Contains the key for the dynamic , changeable information of an Amiibo | User-specific data that changes over time, such as experience points, nicknames, and game progression. |

Always ensure your backup activities respect local intellectual property laws and focus on preserving your physical collection.

The file unfixed-info.bin may be small, but it is the master key to the entire dynamic side of an Amiibo's data. For anyone looking to truly understand how Amiibo homebrew works, appreciating the difference between the static (locked) and dynamic (unfixed) data and the specific keys required for each is essential. Alongside locked-secret.bin , this file is the unsung hero of the Amiibo modding community, working silently in the background to make every cloned, edited, or custom Amiibo possible.

Hopefully, this has helped demystify what unfixed-info.bin is and what it does. For further reading, you might be interested in the technical details of or the broader Amiibo encryption system that makes these files necessary in the first place.

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

Understanding unfixed-info.bin: The Complete Guide to Amiibo Emulation

| Aspect | Assessment | |--------|------------| | Safety | ✅ Safe (when from AMD) | | Necessity | ❌ Not required for daily operation | | Deletable | ✅ Yes (post-installation) | | Recreatable | ✅ Yes (on next AMD update) | | Malware risk | ⚠️ Low, but always verify origin |

One of the most common issues users encounter with unfixed-info.bin is the "Key file signature does not match" error. This error is almost always a result of one of the following:

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

If you receive "File in use" errors, boot into Safe Mode and delete from there.

: The tag encryption master key (80 bytes). (Note: Some legacy configurations combine these into a single 160-byte file called key_retail.bin ).