While not a patch, the Universal Pokemon Randomizer (UPR) is a Java application that edits ROMs. It has a specific checkbox:
You can finally use heavy-hitters like Alakazam or Gengar during the main storyline, right when their power matches the game's scaling difficulty. pokemon fire red trade evolution patch better
Open your patching tool. Select your clean Fire Red ROM as the target file, and select the downloaded patch file as the modification. Click "Apply" or "Patch." Step 3: Play and Enjoy While not a patch, the Universal Pokemon Randomizer