How do I perform a factory reset on the KD-SR86BT?
Press and hold the menu button, navigate to [FACTORY RESET] using the volume knob, and select [YES] to reset settings to default. Note that stored stations are not erased by the factory reset. After a factory reset, the demonstration cancellation sequence will appear when you next power on the unit. (Page 6)
From the official Jvc KD Sr86bt manual, page 6
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