I had my Acer Iconia A700 for about a month now. It was upgraded to Jelly Bean 4.1.2. through the Settings->About tablet->System update process right after I bought it. I have been using it without problem since. However, for no known reason, this afternoon when I switched it on the device booted with a message "Unfortunately, Appstore has stopped" and it went into continuous reboot cycle. Can anyone helped to advise what can be done to solve this probem. It will be very much appreciated. Thanks!