A:Answermp4 video is compatible with Android 5.1 operating system on this device. You will need an on the go Micro USB to female standard USB cable to use a standard flash drive with this device.
A:AnswerThis model is no longer being produced. The replacement model will come with 6.0. It is possible to update android 5.1 to 6.0, but there will be data loss. Here is a link to an article about this upgrade:
http://www.easeus.com/android-data-recovery/upgrade-android-os-from-lollipop-to-6.0-marshmallow.html
