*“I was a bit nervous about updating the firmware on my Harman Kardon BDS 570, but the process was surprisingly straightforward. I downloaded the file from Harman’s official support page, used a clean USB drive (FAT32), and followed the included instructions.

The Harman Kardon BDS 570 represents a pivotal moment in the transition of home entertainment from simple playback to integrated, high-fidelity ecosystems. As a 5.1-channel 3D Blu-ray receiver, it was designed not just as a player, but as the "brain" of a sophisticated home theater, balancing power with a sleek, minimalist aesthetic.

Early firmware versions had a known audio delay (lip-sync) when playing 3D Blu-ray discs. The update patches the audio processing pipeline to match video decode times.

Harman Kardon recommends performing a factory reset after a major update to ensure all new settings take effect properly: Press the button. Go to Settings > System .

If no official update is available

After the update, you must reset the unit to ensure the new software initializes correctly: Switch the BDS ON and go to > System . Select Restore Defaults and confirm with OK .

The update took about 10 minutes. After restarting, I immediately noticed faster disc loading and better HDMI handshake stability with my TV. No more random audio dropouts on Dolby Digital sources. The system feels more responsive overall, and Blu-ray playback is rock solid.