v3.1
1. This software update adds Page 4 with the following new cities: Stockholm,Rome,Warsaw,Tehran,Dhaka,Ho Chi Minh City,Kuala Lumpur,Hobart,Guangzhou,Pyongyang,Denpasar,Tripoli,Addis Ababa,Maputo,Calgary,Philadelphia,Houston,Tijuana,Guatemala City,Montevideo,Manaus
2. A minor fix is made for saving background pattern.
