Travel to Kanto, best by the Magnet Train. Go to Saffron City and find a tall building. Enter and talk to the security guard. He will give you the Up-Grade.
This item can be found in the game it can be used to evolve a Porygon to Porygon2 by trading it to someone.
in the trainer tower . it is a reward.
That only works on Pokemon crystal version in the daycare.
That item does not exist in the early games [gold/silver/crystal], but the closest thing to it is Quick Claw, which can be found by talking to the woman sitting on a park bench with her Pokemon in National Park.
the clear bell
In Team Galactic building in Eterna City, in the chamber to the right after you've found the bicycle guy with Jupiter.
You can't, Electirizer cannot be obtained in Crystal because it is a generation 4 item.
if your talking about the item called upgrade than you can use it evolve porygon into porygon 2 when you link trade it.
look in the trees by pressing a by the tree
An upgrade is the item you nedd Porygon to hold. Trade it, and it will evolve to Porygon-2. Afterwards, the Dubious Disc is used for evolving Porygon-2 to Porygon-Z in the same way.
yes you give the item to a Pokemon and clone the Pokemon just look up how to clone Pokemon on Pokemon crystal in yahoo or something i wouldn't recommend doing it though because it can mess up your game or the Pokemon if you do it wrong
NO SORRY YOU CANT TRADE WITH POKEMON CRYSTAL AND FIRERED AND I HAVE TRIED AND IT DOSENT WORK YOU SEE FIRERED IS AN GBA(GAMEBOY ADVANCE) AND CRYSTAL IS GBC(GAMEBOY COLOR)AND THEY ARE'NT COMPITABLE TO EATCH OTHER SO SORRY DUDE I HOPE YOU UNDERSTAND :D:P FROM LOLPICKET