Pokemon Up-Grade   The Up-Grade is used to evolve a Porygon into Porygon2.   In FireRed to get a Porygon, you must get 9999 coins at the Rocket Game corner and then ex … change them for a Porygon.  To get an Up-Grade, beat eight opponents in the Trainer Tower in Seven Island.nce the regular pokedex is upgraded to the national mode later in the game this will allow the pokedex to record pokemon from other regions which are Johto and Hoenn. An example is this: Charizard is a Kanto pokemon while Slugma is a Johto pokemon and Nincada is a Hoenn pokemon.