Year and half ago I bought one of those all in one wonder,and it worked flawlessly until warranty expired. Problem is that after 3 or 4 mp3 played (from SD or DVD, from navi menu works normal) unit freezes.Other functions works but mp3/DVD player work only after power reset.If I understand correctly, those functions of unit were controlled via DVD firmware.So could the reloading of firmware solve the problem?If so, is it possible to get it somewhere?