Do not download pre-patched ROMs. They often contain malware or are outdated Build 612. Always patch a clean Alpha Sapphire (USA) ROM using the official Build 679 XDelta file.
However, as with all things that live on the fringes of the Pokémon community, the excitement around build 679 was tempered by caution. Many warned that downloading or playing this unofficial build could risk harm to one's computer or Game Boy Advance console. The official Pokémon Company never acknowledged the build, and it remained a ghostly presence in the Pokémon fandom. pokemon star sapphire build 679