Really funny

Recently, some apps are not working in my Kindle Fire. When I tried to upgrade, it asks me to go to application store and re-download. So, I went there, the application store is not working. The applications such as TurnIn is not working. It is a kind frustrating with application upgrade on Kindle Fire. I don't like to upgrade it since it is not that old.

(update)Finally, I figured out the date was wrong in my Kindle Fire. It was causing all the issues including several applications not working. After I set the date and time back to correct value, everything is working. It is really a lesson regarding Kindle Fire to learn.