Click on the revelant link for your Operating system.

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DFRobot blunoFWDownloader

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DFRobot blunoFWDownloader for MAC

Bluno Firmware update

The software is very simple to use.

1. Press and hold the boot button down

2. Connect the USB

3. Two LED flash alternately

4. Download and decompression the Firmware in the Document section ( This is the Link )

5. Load the firmware file (For Bluno or Bluno Nano, please use "SBL_BlunoV*.bin". For BLE-Link,

please use "SBL_BLE-LinkV*.bin")

6. Click the upload button and wait 2 minutes.

Configure the BLE through AT command

Version 1.8 or later

The AT Mode Switch becomes useless at Firmware version V1.8 or later.

1. Open the Arduino IDE.

2. Select the correct serial port in Menu->Tool->Serial port

3. Open the Serial monitor (on the upper right of the IDE windows)

4. Select the "No line ending"(

①) and 115200 baud（②） in the two pull-down menu

5. Type "+++"（③） like this and press send button（④）