Because V1.1 shifted internal code around to fix these minor bugs, it accidentally broke compatibility with early hacking utilities, cementing V1.0 as the community standard. Technical Specifications of the ROM
Minor tweaks were made to how the game handled certain Wireless Adapter communication scripts. Pokemon Fire Red V1.0 Us Rom
The graphics for the word are actually hidden in the ROM data, but a bug introduced during the localization process prevents them from appearing. Because V1
Furthermore, early V1.0 dumps had a famous error known as the "" glitch (a corruption of the text string regarding wild Pokémon). If you download a ROM that has weird "Squirrel" text in Viridian Forest, you have a corrupted dump. A true clean Pokemon Fire Red V1.0 Us Rom will have flawless grammar. Furthermore, early V1
The Definitive Guide to Pokémon FireRed V1.0 US ROM: History, Glitches, and Rom Hacking Legacy