To get to the boss at Silph Co in FireRed: 1. Take the elevator to the 5th floor
2. Take a left and fight the trainer.
3. Head downward until you meet the next trainer, fight him.
4. Step on the teleporter but once you reach where it takes you step of the teleporter then step back on it, this will get you past the trainer on the fifth floor and let you get down that hallway to the key card.
5. Now get back down to the third floor via the elevator you will have to do the teleporter trick again.
6. Take a slight right out of the elevator and fight the trainer.
7. Go to the first doorway on the left and use your newly acquired key card to get into the room.
8. Get on the first teleporter, but be ready you will be fighting your rival on the other end of this teleport.
9. Once you are done fighting your annoying rival go to the next teleporter in the room, it will take you to the 11th floor.
10. head down the hallway, and deal with the trainer.
11. use the key card to get into the room with Giovanni.
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In Pokemon FireRed you have to get through Silph Co to continue. To get through it, you need to be able to beat 31 trainers.
You can find it in Silph Co. on 5F.
Use the portals or the elevator.
The Silph Co. building is located in Saffron City. Walk into the entrance to get in.
you get it in silph co which is in saffron city. after the boss fight, the leader of silph co gives you one.