Hi, My new Zenithink (3 days old) is freezing on boot. I have tried re-setting and draining the battery. My question is...should I return it to the seller, or try flashing the unit? I have very basic skills.It just reaches the small word"Android", and then sticks. Any help or advice would be great. I didn't want to mess with the Zenith just in case the seller says it has been tampered with. Thanks, Judy.