Pokémon FireRed utilizes a save type to log your adventure and Hall of Fame data.
If you try to use a v1.1 ROM for these hacks, the memory addresses won't match, and the patch will likely fail or cause the game to crash. Popular Hacks Requiring This ROM 1635 pokemon fire red usquirrelsgba rom exclusive
: In the v1.0 version, certain Pokémon descriptions in the Pokédex have minor text-wrapping issues or missing words. These were later patched in v1.1. Pokémon FireRed utilizes a save type to log
Pure Fighting-type Pokémon excellent for defeating the first Gym Leader, Brock. These were later patched in v1
What's the difference between different roms? : r/PokemonROMhacks
Because all major ROM patchers use this specific ROM, it has become the standard. If a developer creates a hack, they know that using this base ensures their work runs as intended. 3. Ability to Handle Massive Upgrades