Yes. Put simply, you need to trade it with a Metal Coat. If you don't have this item, follow my instructions below:
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You have to get the National Pokedex and Rainbow Pass.
1. Get a Scyther from the Game Corner (If you don't already have it)
2. Go to 5 Island.
3. Walk through 5 Island Meadow until you find the Rocket Warehouse, but don't go in.
4. Look to the right of the Warehouse. you will see water that is not blocked in by submerged boulders.
5. Surf a little way and there will be a tiny island covered in tall grass, walk along it downward and use surf downwards when you get to the end.
6. You should see another island, on this you should find a completely obvious pile of rocks, next to that is a boy, talk to him. He tells you that the rock pile is a memorial for his dead Onix ( Called Memorial Pillar on your Map) He will then give you the item Metal Coat.
7. Give this to Scyther and trade with another FR/LG, it will evolve. Trade it back.
~Pokefan444
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scyther does not evolve unless you trade it
trade from firered and on firered you have to evolve scyther (which you can catch in the Safari Zone) by trading it with a metal coat
Scyther evolves to Scizor when you trade Scyther while it is holding a metal coat and when the trade dones Scyther evolves into Scizorgive it a metal coat something like that.
to evole the syther into scizor, trade scyther while it is holding a metal coat
You need to defeat Cynthia so you can earn a metal coat and then you can evolve Scyther!