A)use the up-grade?
B)get to the other regions?
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A) equip up-grade to your Porygon and trade it. It evolves into Porygon2
B) if you're talking about the sevii islands, defeat Blaine on Cinnabar Island (to visit islands 1 to 3) and beat the elite 4 (to visit the other islands). But if you're talking about Johto, Hoenn and Sinnoh then sorry you can't go to this regions in this game alone. You'll have to buy the other games to explore them
A}Give it to porygon trade it and it will evoleve into porygon2
B}You can't go tho Jotto or Heonn in fireRed sorry (*o*}
1) upgrade to porygon..
2) just explore the place.. Can't remember
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