Let’s walk through the actual process. For this guide, we’ll assume you are playing Pokémon Fire Red on an emulator (Visual Boy Advance, mGBA, or RetroArch).
Step 1: Obtain your Save File.
Step 2: Download and Open PKHeX.
Step 3: Load Your Save File.
Step 4: Make Your Modifications (Common Examples).
Get the AuroraTicket (Deoxys Event):
Step 5: Save and Test.
Design and Implementation of a Save-File Editor for Pokémon FireRed
Event Flags tab (advanced):
To re-fight legendaries:
If you want, I can:
You’ve already beaten the Elite Four. You don’t need to prove you can grind. Adding 99 Rare Candies or 999 of each vitamin (Protein, Iron, etc.) simply saves time, allowing you to focus on the fun parts: battling, trading, and exploring.