You're looking for information on a Spanish ROM of Persona 4 Golden, specifically a new or updated version. Here's what I could gather:
Grupos como Traducciones Cuernolimaco y Rinnegateam (en el ámbito de Vita3K) trabajaron en parches no oficiales. Estos parches traducían más de 100,000 líneas de texto, incluyendo los nombres de las Personas y las habilidades. persona 4 golden espanol rom new
The game knew his name. The "New Rom" wasn't just a translation; it was a bridge. Every time he made a choice in the game, he’d find a small change in his apartment—a brand of soda he bought in-game appearing on his desk, or the weather outside matching the digital fog. You're looking for information on a Spanish ROM