Google Play Error : [RPC:S-5:AEC-0] When you upgrade from Android 4.1.2 to 4.2, you would find you can't update the app in Google Play. I think it is a bug. Please follow the steps :
當如果從 Android 4.1.2 升級到 4.2的時候,發現無法更新 Google Play內的app時,請依循以下步驟進行:
GO TO [Setting]->[Accounts] -> [Google] -> Select your account name -> Click the menu button in upper-right -> Remove account -> Reboot ->Go to [Setting] again ->[Accounts] -> +Add account [Google] -> Add your account information again -> Open Google Play . Everything goes well.