There are three ways to upgrade firmware

• Bluetooth Upgrade Mode: This mode is more suitable for upgrading a small number of devices. The process takes relatively longer, but it is convenient and quick, requiring no USB hardware driver installation or infrared docking fixture.

• USB Upgrade Mode: This mode is more suitable for upgrading a large number of devices. The process is relatively faster and convenient, but requires installing a USB hardware driver on the computer for first-time use.

• Infrared Upgrade Mode: This mode is more suitable for upgrading a large number of devices. The process is relatively faster, convenient, and requires no USB driver installation. However, an infrared docking fixture must be prepared in advance.

This guide uses the Bluetooth wireless upgrade mode to explain the steps. The steps for the other two modes are similar. If needed, you can learn about them via the links below.

• OP-BT USB Upgrade Mode Guide.
• OP-BT Infrared Serial Upgrade Mode Guide.

Download the Firmware Upgrade Tool

Download the Firmware Upgrade Tool: OP-ISPTOOL.zip

How to put the Bluetooth Optical Head into Upgrade Mode

While the Bluetooth optical head is powered off, press and hold the Power button, then quickly press the Reset/Menu button within 1 second. Two flashing green lights indicate the device is in Infrared Upgrade Mode. You can use the Reset/Menu button to switch between Infrared Upgrade Mode and Bluetooth Upgrade Mode. USB Upgrade Mode is supported in both of these modes.

Preparations Before Upgrading

• Download the Firmware Upgrade Tool: OP-ISPTOOL.zip
• Firmware file you are going to upload. (Please contact our technical support team for firmware if you don’t have one: ).
• A Windows 10/11 computer.

Upgrade Instructions

Step 1: Put the Bluetooth device into upgrade mode

While the Bluetooth optical head is powered off, press and hold the Power button, then quickly press the Reset/Menu button within 1 second. Two flashing red lights indicate successful entry into Bluetooth Upgrade Mode. If two green lights are flashing, use the Reset/Menu button to switch to Bluetooth Upgrade Mode.

Step 2: Pair the Bluetooth optical head with the computer to connect and generate a virtual COM port.

       For pairing instructions, please refer to [How to pair with Windows 11](/en/support/how-to/op-bt-how-to-pair-with-windows11/).

Step 3: Update the firmware

Open the Firmware Upgrade Tool. Select UART for the Interface option. Click the “Load File” button and select the firmware file to update. Click the “Upload Firmware” button and wait for the download to complete. Manually power cycle (turn off and on) the Bluetooth device. It can be used normally after a successful restart.

Firmware Upgrade Tool configuration:

• Interface: UART
• Device: COMx (The COM port number generated on the computer after Bluetooth pairing, COM3 in this example)

Port Configuration:

Load Firmware:

Start Update:

Update Complete:

Important Notes:

1. Ensure the optical head is in upgrade mode before starting.
2. Ensure the optical head has sufficient battery charge.
3. Do not power off the device during the operation.

Common Issues and Solutions:

Technical Support Contact

For any technical questions, please contact our support team:

Email:

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