Summary of "TAKE ANOTHER STARTER (ACE GUIDE) Pokémon Fire Red / Leaf Green SWITCH VERSION🔥🍃"

TAKE ANOTHER STARTER (ACE GUIDE) — Pokémon FireRed / LeafGreen (Switch)

How to reactivate the game’s opening Professor Oak starter scene and pick a new starter in FireRed/LeafGreen (Switch) using the Ace mod/tool.
How the starter pick is linked to a roaming legendary, and how to force a different roaming beast into Kanto.
The process uses an online code generator (created by Papa F and team) that produces per-game codes which you enter into the game via PC box names.

Ensure Ace is already set up in your game (the creator refers to a separate setup video).
Open the online generator (link provided in the original video; tool credited to Papa F and team).
Select your game and language (e.g., English, Pokémon FireRed).
In the site UI choose the “make starters reappear” option and press Compute — the site will generate a code.
In-game, go to your PC box names and rename boxes exactly to the characters printed by the website (no extra trailing spaces). Press Start then A to confirm each name.
Place your Ace Pokémon in Box 13 slot 2 and any Pokémon in Box 13 slot 1.
Keep the specific box the tool indicates always empty (follow the tool’s exact instructions).
If you previously ran a longer code, replace unnecessary box names with a simple “A” to avoid conflicts.
Activate the code by performing a double-swap with the Pokémon next to the Ace (see the video for the exact double-swap method).
Fly to Viridian City, go down Route 1 to Pallet Town — the classic Oak scene should trigger and return you to the lab to choose a starter.

The starter you choose via this method is linked to a roaming beast (examples mentioned: Suicune, Raikou).
To force a different roaming beast or re-trigger one you’ve already unlocked:
1. Go back to the generator site and choose “run script via NPC.”
2. Use the provided “give Celio Sapphire” script (this replicates Celio’s in-game action that activates a roaming beast).
3. Copy that script into the site’s script line, press Compute, and enter the resulting box-name code in-game.
4. Double-swap with the Ace to activate the code, then talk to the old man (Celio) in the Viridian City Pokémon Center — this triggers Celio’s cutscene and brings a new roaming beast into Kanto.

Important: the generated code is unique per save/game. Do not copy someone else’s code; generate your own.

The code is unique per save/game — always generate your own code.
Rename boxes exactly as shown by the site (matching characters, no trailing spaces).
Interact with your Ace using the yellow end (press Y on the controller) as demonstrated in the video — use the correct interaction orientation.
Keep the specified box empty as instructed by the tool.
If you’ve run other scripts before, simplify unused box names to “A” to avoid conflicts.
Carefully select the correct language and game version on the generator site.