Before you go about to update the software which is cumbersome, go check the audio source first to determine if HDMI can be supported at the audio source. From the DVD setup (available through your remote control), choose audio setup. Look at the HDMI setup and see if it's turned on. This function can only be supported if your audio source (eg., amplifier) is HDMI enabled. If not HDMI enabled, you will have to turn off the HDMI setting for your DVD, then go to "digital audio setup" and set it to "all". After this is done, your DVD now should be able to produce sound in DTS mode.
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