Useful application available for free in Google Play (SDFix: KitKat writable MicroSD) will help you solve the problems of writing external card, problems arising on the version of Android 4.4 KitKat. Starting with Android 4.4 KitKat can not be installed on external memory card applications but application solves this problem.According to the developer, it is not necessary to install it and use it if you have a customized firmware version, like Cyanogenmod or other versions because the problem occurs only stock versions of the operating system Android.
The application is virtually useless subantelege as phones and tablets whose internal memory can be extended using a memory card.
The application only works on devices that have root access and modify the device configuration allowing you to "write" files on the MicroSD card. Below, you details on the developer offers in Google Play.