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How to upgrade MonoLED-BT and DuoLED-BT firmware

How to upgrade MonoLED-BT and DuoLED-BT firmware

This Guide explains how to upgrade Mono/DuoLED-BT Wireless Headsets firmware in order to fix a series of issues.

Mono/DuoLED-BT User Guide: LED Headsets User Guide.

Created: November 2022

Updated: January 2026

Permalink: https://wildix.atlassian.net/wiki/x/AQCvB

Requirements

  • Windows OS

  • WIService updated to the latest version

Note: Firmwares starting from 0x5E31 or 0x61BD belong to new generation headsets with the following Vendor ID and Device IDs:

  • Vendor ID: 340B

  • Device IDs: A075 (MonoLED-BT headset), B075 (DuoLED-BT headset)

You can check if your MonoLED-BT/ DuoLED-BT Headsets support the upgrade via WIService wislog.txt, which you can find in the following folder:

  • Windows: "C:\Users\USER\AppData\Roaming\Wildix\WIService\wislog.txt"

In the "wislog.txt" file, look for Vendor ID and Device ID for the headset. Example:

headset-pid.png

Firmware upgrade for these headsets is possible only using Wildix Connect (see the New Generation Headsets section of this guide).

New Generation Headsets

  1. Download and extract Wildix Connect.zip

  2. Open the folder and run the Wildix-Connect.exe file

Note: Admin rights are required to proceed.

  1. Plug in the headset and go to the Help tab to install the official upgrade driver

help-tab-install-driver.png

 

  1. Select destination location and click Next:

select-destination-location.png

  1. Choose the component USB Debug drivers and click Next:

qualcomm-usb-debug-drivers.png

  1. Click Finish:

finish-driver-installation.png

  1. Unplug and recconect the device, for the driver installation to be completed.

Note: The driver only needs to be installed once. The subsequent headset upgrades must be performed when connected to the same USB port.

Old Generation (pre-2025) Headsets

The below upgrade procedure works only for old generation (pre-2025) MonoLED-BT/ DuoLED-BT headsets.

Upgrade Procedure

In one of the first versions of the Headset delivered to customers, there are certain issues that can be fixed by upgrading:

  • Impossible to hold/ unhold a call by pressing Multi-function button

  • Virtual keyboard on Vision (EOL)/ SuperVision (EOL) doesn't work with connected DuoLED-BT

  • LED indication is disabled after disconnecting second Android/iOS device

  • LED indication is not switched to Auto/ away status

  • No audio from mic in Wizyconf after hanging up a call

  • Mic doesn't work in Wizyconf after a one-on-one call in Collaboration

  • Beep sounds appearing after changing mic volume level on DuoLED-BT

To upgrade the Headset, proceed with the following steps:

  • Connect the Base Station to your PC via USB port

  • Go to Quick Launch Toolbar -> right-click on WIService icon and select Settings

  • Go to Headset Firmware Update tab and click Update button

Note: if your Headset is up to date, the upgrade is unavailable (Update button is greyed out).

  • Follow the instructions to prepare the Headset to be upgraded:

    • Unpair all connected Bluetooth devices if the Headset is connected directly via embedded Bluetooth or disconnect the Base Station from PC

    • Turn the Headset off and on by pressing Multi-function button

    • Connect the Headset to your PC via USB port

  •  Once the Headset is prepared, you need to switch it to upgrading mode by pressing and holding Mute and Volume Down buttons for 5-6 seconds

Note: Starting from firmware v. 0x5DE9, there is no need to press and hold the Mute and Volume Down buttons. The upgrade is started automatically after connecting the headset to your PC. 

  • The upgrading mode is activated and the upgrade is in progress

Mono-DuoLED-BT-Updating Headset.png

  • Once the Headset is updated, disconnect it from PC and connect the Base Station to continue the procedure

  • When connected, the Base Station starts upgrading automatically

  • After the upgrade is completed, click Done to finish

Mono-DuoLED-BT-Updating Completed Successfully.png