SunFounder 3in1 Kit
7.2.2 Re-brun the Firmware with R3
1. Build the circuit
Connect ESP8266 and SunFounder R3 board.
2. Burning the firmware
• Follow the steps below to burn the firmware if you are using Windows.
1. Download firmware and burn-in tool.
– ESP8266 Firmware
2. After unzipping, you will see 4 files.
– BAT_AT_V1.7.1.0_1M.bin: The firmware to burn to the ESP8266 module.
– esptool.exe: This is a command-line utility for Windows.
– install_r3.bat: This is the command package for Windows system, double click this file
will run all the commands inside the file.
– install_r4.bat: Same as install_r3.bat, but dedicated to UNO R4 board.
3. Double click install_r3.bat to start the firmware burning. If you see the following prompt, the firmware
has been installed successfully.
340 Chapter 7. FAQ
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