Update the Firmware in Your ESP8266 Wi-Fi Module

 ESP8266 is low cost WiFi module suitable for adding WiFi functionality to an
existing microcontroller project via a UART serial connection. The module can even be reprogrammed to act as a standalone WiFi connected device–just add power. Here this tutorial will help you to update the firmware of your ESP8266.



Required components/Softwares

1.ESP8266 WIFI Module
2.USB to TTL Converter
3.Connecting wires
4.Firmware  Click here to download firmware
5.Flash Tool Click here to download Flash tool
6.3.3V(500mA) Power supply

Hardware Setup


ESP8266 pinout

Here i used D-SUN USB to TTL

Connect your ESP8266 module as follows:

• Vcc ---------->  3.3V ( 300-400mA)
• Gnd ---------> Ground
• CH_PD -----> 3.3V
• RST ---------> Ground(Flash time only)
• GPIO0 ------> Ground(Flash time only)
• UTXD -------> TX  connect to RX of USB to TTL converter
• URXD -------> RX  connect to TX of USB to TTL converter

Now connect your USB to TTL converter to computer and open Flash tool you will see a window like

Now do following Steps

1.Check first download path config box and select your firmware path

2.Set ADDR 0x00000

3.Check spiAutoCheck box

4.Select COMPORT and Baudrate

4.Click on START

5.Remove ESP8266 Reset wire from ground

Now wait to complete your firmware update and finally you can see a window as shown below