protected int getVersionIndex(String romId) {
		switch (romId) {
			case "B4WJ0":
				return 0;
			case "B4BJ0":
				return 1;
			case "B4WE0":
				return 2;
			case "B4WP0":
				return 3;
			case "B4BE0":
				return 4;
			case "B4BP0":
				return 5;
			case "B4WJ1":
				return 6;
			//case "B4BJ1":
			//	return 7;
			default:
				throw new IllegalArgumentException("Unknown ROM ID \"" + romId
						+ "\".");
		}
	}