May 2024

Updated the firmware version of the BT-A700 Series.

February 2024

Updated the firmware version of the BT-A700 Series.

November 2023

Updated the firmware version of the BT-A700 Series.
The related manuals have been revised in accordance with the above version update.

August 2023

Updated the firmware version of the BT-A700 Series.
Updated the firmware version of the BT-A500 Series.
The related manuals have been revised in accordance with the above version update.

May 2023

Updated the firmware version of the BT-A700 Series.
The related manuals have been revised in accordance with the above version update.

February 2023

Updated the firmware version of the BT-A700 Series.
Updated the firmware version of the BT-A500 Series.
The related manuals have been revised in accordance with the above version update.

December 2022

Opened the updated BT Series User Support website.