Pokemon Legends Arceus [01001f5010dfa800][v1966... Instant

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: This is the unique Title ID for the game. Every Switch game has a specific hexadecimal ID used by the system to identify the software, save data, and updates.

If you are looking for technical documentation or specific update files, you can check community resources like the Pokémon Wiki for general game info or the Pokémon Legends: Arceus Wikipedia for development history.