How do I re-register a Pokewalker?

Question

My SoulSilver and Pokewalker are both pre-owned by different owners, so my Pokewalker is already registered with its previous owner's SoulSilver, not mine. How do I register my Pokewalker with my own copy of SoulSilver?

Comments

There used to be something in the manual that addressed this kind of thing, but my copy is long gone and I don't remember how to do it unfortunately. :(

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Old method

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That’s some ancient knowledge you seek.

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https://en-americas-support.nintendo.com/app/answers/detail/a_id/3925/~/how-to-reset-the-pok%C3%A9walker
Does this help? I'll add it as an answer if it does.

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It worked. Go ahead and post an answer.

Answer 1

1. Start the game on the Nintendo DS.
2. Select Connect to Pokéwalker from the Main Menu.
3. You will now be on the menu that says, Save, then go for a Stroll. Press and hold Down on the D-Pad, X, and the L Button all together.
4. The game will now caution you that you are erasing the Pokéwalker, and all other data will be lost. Select Yes to proceed.
5. Now select Erase Pokéwalker Records, and then when prompted select Connect on the Pokéwalker to complete the process.

Source