I have problem with 5.1 sound on my DVD player Red Star system 2014. When I finished with memorize the volume on each speaker (front, satellite, central...) and when I push up or down master volume, all my settings with speakers get lost and main sound come in central speaker. And when I check display it said that is memorize on the level that I do, etc. left speaker more, central speaker down and so on. Do you have any solution for this problem and DVD player is based on Zoran chip ZR36768HQC. Do you know is there any firmware update for this chip?