mobile

Hi to everyone!
I want to use the externSD by Apps.
A change „Platform.XML“ with the Total-Commander-Editor failed by the function “SAVE”. Is it a Huawei permission-problem? Also the app “NextApp SDFix“ failed. Can I use other tools? ........I´m looking for a simple way.

My system: Android 4.4.2, EMUI 2.3 .....B103 (Huawei Update), root mit SuperSU und BusyBox


Thanks