If your new bought unit can't start android system, How fix it?

This is Only for android 4.2 system for our units.The customer issue is I just received ordered unit,unfortunately I have problem booting to android.after few short sounds it brings recovery screen . I can select recovery option but I can not execute it. Then after short while system shuts down.How can I fix it?

This is Only for android 4.2 system for our units. You need to update the android system. First, you can download the update the android system file in this page https://mega.co.nz/#!D5M1wJzB!Fm1wKpzA9KTmDbcCh2oDLz7Uic8Lat5w5jG5XZeS6ZM and unzip it, you will see the two files, copy it in the GPS card slot and put in the unit, The unit have to connected power supply, then press on the power button an the time, don’t let go of it, then press RST. Please loosen it when you hear warning tone, then according to the hint to operate it. when updated system it will automatic shut down. Hope it can help you. Any more questions please feel free to let me know.