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1. Check Product’s FIRMWARE Version
- Turn on the product. Make the tray open by pressing ONEN/CLOSE button.
- Press MENU button on the remote controller, then press Numeric button 8,9,5.
- In some case of 5-Disc supported models, Play an DVD disc first
,before Tray open
- Do the same procedure mentioned before
: press Menu, 8, 9, 5 buttons on the remote controller
( Model name : HT-DB6XX, HT-DS6XX, HT-P4X )