V34 is only released to HTS3538/05. /98, /55, /51, /12 and HTS3539/12 and /51

V34 includes the following changes:

• HDMI ARC (Audio Return Channel) feature enabled. You can enjoy the best sound performance of a TV program from your Home Theater System via a simple HDMI connection.
• Improved system performance

The former firmware version includes the following changes:
NA

Kindly download the software at www.philips.com/support