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Sarah GayAug 29, 2025
What to do if “UNSUPPORTED DEVICE” appears on JVC Car Stereo System?
- TTerri WangAug 29, 2025
If you see the message 'UNSUPPORTED DEVICE' on your JVC Car Stereo System, verify that the connected USB device is compatible with the unit and that the file systems are in a supported format. You can also try reattaching the USB device.