An automatic batch transfer routine for Andriod which will run automatically from ar

General information for the business: Need to automatically update files in a folder of an Android tablet from a thumbdrive
Kind of development: New program from scratch
Description of requirements/functionality: Need to insert a thumbdrive into an Android tablet and automatically replace files on a directory of the tablet from the thumbdrive.
Specific technologies required: Android
Extra notes: The tablets are located in remote locations and we cannot reach them over internet. This routine will enable the updating of files in a specific directory of the tablet.