that the firmware is known to fix. If the system plays your Blu-ray collection and connects to your TV without HDMI dropouts, leave it unchanged.
| Problem | Likely Cause | Solution | |---------|--------------|----------| | USB not recognized | Drive not FAT32, too large, or not USB 2.0 | Reformat to FAT32, use 8GB or 16GB drive | | “Update file not found” | Wrong file name or file in folder | Rename to BDS570.bin and place in root | | Update freezes at 99% | Corrupted download or power fluctuation | Redownload file. Restart unit (risk of brick). | | After update, no sound | HDMI audio settings reset | Go to Settings > Audio > HDMI Audio Out > Amplifier | | Region code error for Blu-ray | Firmware reset region settings | BDS 570 is region-locked; cannot change via firmware | harman kardon bds 570 firmware update