PokéBase - Pokémon Q&A
1 vote

Can you guys please tell me what it does and when I know I will be sooo happy

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2 Answers

4 votes
Best answer

The item UP-Grade is a hold item that makes Porygon evolve into Porygon 2, but only by trading. To evolve Porygon 2, make it hold a Dubious Disc and trade.

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Thank you guys for that
3 votes

Upgrade evolves porygon to porygon2 when you trade it if it's holding it.

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