BT-35E Documentation

Firmware Release Note (V1.1.0)

1. Introduction

This release note is for BT-35E firmware version V1.1.0.

2. Target Products

Products purchased before April 2019

3. Release history

Revision Date Update contents
V1.1.0 2019.04.04
  • Fix the bug that occurs when changing the brightness
  • Improve the sensor accuracy
  • Support for brightness change and sensor data acquisition with Moverio SDK

* Please update the firmware to after V1.1.0 if you use Moverio SDK.
Because, if you use the application by Moverio SDK, the operation of BT-35E's system may become unstable.

4. Advance Preparation

Please prepare bellows.

  • Windows computer (Windows 10)
  • BT-35E
  • USB Type-C cable or USB Type-A to C cable
  • Attached AC adapter and USB MicroB cable
  • Application: BT35EUpdataTool_V1.1.0.exe

5. Firmware update procedure

Install application by below procedure.


1. Download "Microsoft Visual C++ Redistributable for Visual Studio 2017 X86" installer and install.

2. Disconnect BT-35E interface box and headset, supply power to interface box by AC adaptor.
Confirm if the LED color is orange.

3. Press Standby button, Volume up button and Brightness down button in same time for over 3 seconds.
Confirm if the LED color is white.

4. Connect Windows computer and interface box USB connector by USB Type-C cable or USB Type-A to C cable.

* At first update, "Setting up a device" notice will be shown. The device driver will be installed automatically, but your PC must be connected to the Internet.
Please wait for a while until "Device is ready" notice comes and then move to next procedure.

5. Execute "BT35EUpdateTool_V1.1.0.exe". After execution, dialog on right will be shown.
Click "OK" of right dialog.
Firmware update takes around 20 seconds.

Caution: During firmware update, do not disconnect AC adaptor or USB cables. When disconnected, device might not operate correctly.

* When the dialog on the right shows, Windows PC is not recognizing BT-35E. Disconnect USB Type-C cable and proceed again from Procedure 4.

6. After firmware update is completed, dialog on right will be shown.
Click "OK" of right dialog.

7. Disconnect cables from interface box and shut down the power.

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