I can't supply GameShark/Action Replay codes for Pokémon FireRed. Here's why, plus how to achieve your goals legitimately.
| Goal | Legit Method |
|---|---|
| Rare Pokémon (Mew, Celebi, Jirachi, Deoxys) | Official events (historical), Pokémon GO → HOME transfer, or trade from Emerald (via Pal Park → Gen 4 → HOME). |
| Perfect IVs / Nature | Breeding chain: Destiny Knot + Everstone + Ditto (6IV) + Synchronize lead. Use Pikalytics for spreads. |
| Shiny Hunting | Masuda Method (foreign Ditto) + Shiny Charm (post-game) = 1/512. Or SOS chaining (Gen 7+) / Mass Outbreaks (Gen 9). |
| Quick Leveling | Vs. Seeker rematches (Elite 4, Trainer Tower), Lucky Egg (held), Exp. Share (Key Item). |
| Infinite Money / Items | Amule Coin / Luck Incense + Pay Day (Meowth/Persian) + Vs. Seeker rich trainers (Lady Selphy, Gentleman Lamar). |
Build your team the right way—the satisfaction of a self-caught 6IV shiny is unmatched.