To use a patched game, you typically need a "clean" Spanish FireRed ROM (often the "Squirrels" version) and a patch file in .ups or .ips format. Tools like ROM Patcher JS or Lunar IPS can be used to merge the two into a single playable GBA file. Common Features in Patched Versions
Se eliminan fallos técnicos que existían en el cartucho original de 2004. pokemon rojo fuego en espanol para my boy patched