I'm looking for a flash cart that is not dependable of a battery to work, has Flash ROM memory, and boots the game directly (no menu). Is there a flash cart like this? I don't mind if I can only burn one rom at a time. I've read about the Fire Linker, but I assume it has internal battery. I'v also learned that it has some problems with games like Pokémon FireRed/LeafGreen, where the game can't save: "The 1M Sub-Circuit board is not installed." Thanks in advance.