Standard NFC tags are read-only after the first write. To emulate a Skylander, you often need "Magic" (or "Un-locked") NFC tags that allow you to overwrite the UID (Unique Identifier).
The Bin Files exclusive content expanded the gameplay experience for Skylanders: Spyro's Adventure, providing new characters, levels, and challenges for players. The packs helped to refresh the game and provided a new wave of excitement for players. skylander bin files exclusive
When you write a BIN file back to a blank NFC card, the game treats that card exactly like the original physical toy. The Hunt for "Exclusive" BIN Files Standard NFC tags are read-only after the first write