If you want to play standard Pokémon FireRed , any working ROM will do. However, if you want to play community-made modifications, the Squirrels ROM is usually mandatory.
His first battle wasn't against a rival, but against the environment itself. A wild Squirrel appeared! Red’s Squirrel didn't use 1636 Pokemon Fire Red Squirrels Rom
Download the file. Download the hack patch file (e.g., Unbound.ups). If you want to play standard Pokémon FireRed