Sony SupportMEX-N4200BT

Firmware Update M 13 / S 34

Improves Bluetooth connectivity

    Applicable Models
    About this download
    System Requirements
    File Info
    Preparation
    Download & Install

    Applicable Models

    This information is for the following models:

    • MEX-N4200BT

    IMPORTANT: This file is only for use with the models identified. Not all models are sold in all countries.

    About this download

    Benefits and Improvements from the latest update

    • Improves Bluetooth connectivity
    • Resolves minor issues

    Previous Benefits and Improvements

    The following benefits and improvements are also included in this update.

    • Resolves an issue where sound is distorted when HPF (High Pass Filter) is set to ON
    • Resolves an issue where sound during a call is not output from a speaker of the main unit when the RINGTONE setting of the Bluetooth setup is set to 1

    System Requirements

    What You Need

    • a computer with access to the Internet
    • a USB storage device
      NOTE:
    • USB memory with exFAT format is not supported.
    • USB memory with over 32GB capacity is not supported.

    File Info

    File Name

    • MEXN4200BT_M13S34.zip

    File Version

    • M 13 / S 34

    File Size

    • 743 KB (761,827 byte)

    Release Date

    • 08-07-2019

    Before You Start

    NOTE: If the firmware of your unit is version "M 13 / S 34" or above, you do not need to perform the update.

    How to confirm the firmware version on the main unit:

    1. Turn the main unit "ON".
    2. Press and hold the "SRC" button for 1 second on the main unit to turn the source off and display the clock.
    3. Press the "MENU" button.
    4. Turn the control dial to display "GENERAL", and press the control dial.
    5. Turn the control dial to display "SET FIRMWARE", and press the control dial.
    6. Turn the control dial to display "FW VERSION", and press the control dial to display the current firmware version.

    Download & Install

    Preparation: how to prepare a USB storage device for the firmware update

    1. Connect the USB device to your computer and make sure you format it, selecting the FAT16 or FAT32 file system.
    2. Make sure your computer is connected to the Internet.
    3. Download the update file to your computer.
      • File name: MEXN4200BT_M13S34.zip
      • File size: 743 KB (761,827 byte)
    4. Please unzip the downloaded zip file.
    5. Copy the "MEXN4200BT_M13S34.U88" file under the root directory of the USB device that is connected to your computer.
      NOTE: The update will not be performed if the file is not copied to the root directory of the USB device or if the name of the file is modified.
    6. Disconnect the USB device from your computer.

    Update: how to update the firmware of the main unit using the USB storage device.

    NOTES:

    • This update procedure (in your car or boat) takes approximately 2 minutes to complete.
    • Please make sure you follow all the steps indicated below.
    • To prevent the battery voltage from becoming too low during the update process, it is recommended to perform this update with the car (or boat) engine running. Before starting the update process with the car (or boat) engine running, make sure the vehicle is parked in a safe place and keep the engine running until the update is complete.

    1. Turn the main unit "ON".
    2. Press and hold the "SRC" button for 1 second on the main unit to turn the source off and display the clock.
    3. Press the "MENU" button.
    4. Turn the control dial to display "GENERAL", and press the control dial.
    5. Turn the control dial to display "SET FIRMWARE", and press the control dial.
    6. Turn the control dial to display "FW UPDATE", and press the control dial.
    7. Turn the control dial to display "FW UPDATE-YES", and press the control dial.
    8. When the message "INSERT USB" is displayed, connect the USB storage device to the USB port on the front panel of the main unit.
    9. The update should finish in approximately 2 minutes and when finished and successful, the unit will restart automatically.
    10. Confirm that the firmware version is updated to version "M 13 / S 34".