What should I do if the USB function of the ROADSTAR HRA9D+BT radio freezes?

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If the USB function of your ROADSTAR HRA9D+BT radio freezes during playback, it is usually due to an incompatibility between the USB stick and the device. Here’s how to resolve this issue step by step.

Step 1: Check the format and capacity of the USB stick

Your USB stick must be formatted in FAT32 (or FAT16). This is the only file format recognized by the HRA9D+BT radio.
The maximum accepted capacity is 32 GB. If your stick exceeds this size, reformat it or use a smaller stick.
If the stick is poorly formatted, use a computer to reformat it to FAT32 before reusing it.

Step 2: Check the audio files

The radio supports MP3 and WAV formats. Other formats (FLAC, OGG, M4A) are not compatible and may cause freezes.
Delete or convert all files in unsupported formats.
Ensure that no file is corrupted by testing with only a few audio files.

Step 3: Reset the USB connection

Completely turn off the ROADSTAR HRA9D+BT radio.
Remove the USB stick and wait a few seconds.
Reinsert the USB stick and turn the radio back on.
Press the MODE button to select USB mode. The device should then read the stick automatically.

Step 4: Use another USB stick for testing

Test with a different USB stick, properly formatted in FAT32 and containing only high-quality MP3 or WAV files.
If this new stick works, the problem lies with your original USB stick, not the radio.

Important point: The ROADSTAR HRA9D+BT radio supports only USB sticks. Do not attempt to connect an external hard drive or SSD, as this could damage the internal circuitry of the device.

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