0:06 BL20A: Blink red light when playing
0:17 BL20C: Solid red light when playing
0:26 1. Insert U-Disk rather than the USB Cable
0:38 2. Switch to the correct input mode (BT/USB)
0:47 3. Test other U-Disk
0:57 4. Store MP3 music format
1:10 5. Do not create a folder under the U-Disk
1:28 6. The U-Disk capacity should not exceed 32 GB, and each file should be smaller than 100MB.
1:45 7. Format U-Disk to FAT32 on the computer
How to make the USB mode work correctly?
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