Some newer hacks specifically require "Version 1.1" or European dumps, leading to checksum mismatch errors if you attempt to use the 4780 Xenophobia file. Reddit·r/Roms
Box 2: “FOREIGN.” Inside: a Pichu with a glitched sprite, a Rattata named “Sewer-Tongue,” a Slowpoke missing its tail sprite. Their location data read “Route 47”—a real route, but one in Johto with no wild Pokémon. Their catch dates: all 04/78. April 1978. The game wasn’t released until 2009. pokemon heartgold xenophobia 4780 link
The number is a standardized ID used by ROM collectors to categorize and organize Nintendo DS titles. This specific release is frequently discussed in community forums like Reddit for its stability when used on emulators like DraStic or hardware like R4 cards. Some newer hacks specifically require "Version 1