Sony SupportDSX-M55BT

Article ID : 00030146 / Last Modified : 09/05/2023Print

The car stereo doesn't recognize the USB storage device or an error displays when attempting to play music

    Follow these steps to resolve the issue on your car stereo, checking for resolution after each step. Not all car stereo receivers have USB capabilities, so check your manual for model-specific information. Manuals are posted on your model support page.

    • If the device isn't recognized, remove the USB device and then re-insert it.
    • Check the firmware version of your car stereo and update it as necessary. Downloads are posted on your model support page.
    • If your car stereo has two USB ports, make sure to use the port that matches your USB drive's file specifications
    • Ensure your device is set to the required USB mode before connecting it to the car stereo.
      • Some USB devices need to be in a specific mode (such as a Mass Storage Class or Player mode, etc.) before you can use the USB device for playback.
        • Check the specifications of the USB device or contact the manufacturer for information.

    • For USB drives with larger storage capacity, there is a limit to the number of files that the car stereo can read from the USB drive. Check your Help Guide for details.

    • If the NO DEV or No Device error message appears, follow these steps below accordingly:

      • If a USB device is connected:
        1. Disconnect the USB device from the car stereo and wait for approximately one minute.
        2. Reconnect the USB device to the car stereo.
      • If there's no USB device connected:
        1. Turn the power off on the car stereo and wait for approximately one minute.
        2. Turn on the car stereo.
    • If the NO SUPPORT, NO SUPRT, or --:-- error message appears, refer to this article.

    Note: If you have the RSX-GS9:

    • Check the system requirements of the USB device and check whether the USB device is operating properly.
    • Check that the root directory of the USB device contains a Music folder and that the folder contains playable music files (excluding iPhone® mobile devices and iPod® digital music players).
    • Check if the names of music files include special characters.