BT-40 BT-35E BT-30C
This article will show you how to install the device driver for updating the firmware for BT-40, BT-35E, BT-30C.
BT-40, The Headset of BT-40S, BT-35E, BT-30C
Prepare the following items.
After the installation is complete, the DfuSe Demo (v3.0.6) screen will appear, but click the "Quit" button to exit.
Proceed to the state just before running the firmware update.
The firmware update procedurediffers depending on the model, so please check each update procedure.
<For BT-35E> Click here for the firmware update procedure page.
<For BT-40, The Headset of BT-40S> Click here for the firmware update procedure page.
Open Device Manager.
From the menu displayed by pressing the [Windows] key + [X] key, click "Device Manager (M)" to start it.
The driver opens the abnormal device.
Open "Other Devices" in Device Manager.
Install the driver in "STM32 BOOTLOADER".
1）Select "SMT32 BOOTLOADER" in Device Manager, and click "Update Driver (P)" from the menu displayed by right-clicking the mouse.
2）Specify the folder containing the driver.
When the driver update screen is displayed, click "Browse my computer for drivers".
When the driver reference screen is displayed, press the "Reference (R)" button.
Specify the installation folder that was confirmed when DfuSe_Demo_V3.0.6_Setup.exe was executed in "3. Preparation".
Normally, it will be the following folder.
"C:\Program Files(x86)\STMicroelectronics\Software\DfuSe v3.0.6"
Check "Include subfolders", and click the "Next (N)" button to start the driver installation.
When the driver installation is complete, the screen "Windows has successfully updated your drivers" is displayed.
4）Check the installation result
Open the device manager, there is no "STM32 BOOTLOADER" in "Other devices".
And if "STM Device in DFU Mode" is displayed in "Universal Serial Bus Controller", it is successful.