I recently crashed my nexus 6 on the road at 70mph so it is replaced. I am trying to put a back up file I had saved on my computer back on the nexus 6, The app is Drivvo and each time I try to copy the back up file from the computer to the phone I get the error message the device is not responding. It has let me move every other file from the computer to the nexus 6 except this one. What I am missing here?