Press the [USB] input selector button to switch the source to USB.
: Ensure the USB is in the correct port (USB B) and is properly seated.
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Insert the prepared USB flash drive into the on the front panel.
: Always use USB B for updates and recovery; USB A is primarily for media playback. Press the [USB] input selector button to switch
"Be careful – my unit froze once after the update during a heavy bass hit. A 10-second power cycle fixed it. But the sound staging is wider now. Seriously." –
Once completed, the display will read or "FINISH" , and the system will automatically restart or enter standby mode. Remove the USB flash drive safely. Troubleshooting Common Update Issues This link or copies made by others cannot be deleted
Ensure you are using USB Slot A (designated for playback and system utility) rather than USB Slot B (primarily engineered for power charging and recording features).
To help diagnose any specific issues you are facing, could you tell me , if you are experiencing specific Bluetooth or audio errors , and what computer OS you are using to transfer the update files? Share public link