| Issue | Likely Cause | Solution | |--------|---------------|-----------| | “Update via NET” greyed out | No network connection or server down | Use USB method instead | | Update freezes at 0% or 99% | Corrupt download or power glitch | Power cycle (unplug 1 min), retry via USB | | “USB device not supported” | Wrong format or folder structure | FAT32; root must contain HTR695 folder | | Receiver doesn’t recognize USB | Drive too large or high power draw | Try 4GB USB 2.0 drive | | After update, no sound | Settings reset to defaults | Re-run AccuEQ, check speaker config | | HDMI ARC stopped working | CEC/ARC settings reset | Turn off all devices → Enable HDMI CEC + ARC in setup | | Wi-Fi credentials lost | Update clears network settings | Re-enter Wi-Fi password |
The latest stable firmware version for the HT-R695 is (or a similar 4-block sequence depending on region). Do not confuse this with the main unit microcontroller version. onkyo ht-r695 firmware update