1. When the audio is fully charged, the indicator light is blue, and it turns red when the power is lost. Sometimes the charging red light is long and bright, and the audio actually crashes.
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2, when there is a crash, the solution is very simple, find only the two keys at the top of the sound, \"switch\" and \"\" keys.
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3. Press and hold the above two keys with two fingers at the same time, pay attention to the same time.
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4. Hold the press position for a little longer, about 20 seconds.
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5, after tens of seconds of pressing the two keys, the audio will be forced to shut down, and then it can be used normally.