Here shows how to refresh firmware for DoitCar.
Step1: Plug ESP12E-devKit into USB port with microUSB.
![[Image: uSHLR43.jpg]](https://i.imgur.com/uSHLR43.jpg)
Step2: Open the ESP FLASH DOWNLOAD TOOL. And the configuation is shown as belows.
Attention: Choose correct Serial Port and correct firmware: doit_car_20150914_2
![[Image: JqPS9Fz.png]](https://i.imgur.com/JqPS9Fz.png)
Step3: Press "START". Keeping press "FLASH" button, then press "RESET" button. Then the downloading process begins:
![[Image: UW3V15x.png]](https://i.imgur.com/UW3V15x.png)
Step4: Done. Reboot the Esp12E devKit. The blue light will be keep lighting.
Enjoy it.
ATTACHMENT: http://en.doit.am/DoitCAR.zip
Step1: Plug ESP12E-devKit into USB port with microUSB.
Step2: Open the ESP FLASH DOWNLOAD TOOL. And the configuation is shown as belows.
Attention: Choose correct Serial Port and correct firmware: doit_car_20150914_2
Step3: Press "START". Keeping press "FLASH" button, then press "RESET" button. Then the downloading process begins:
Step4: Done. Reboot the Esp12E devKit. The blue light will be keep lighting.
Enjoy it.
ATTACHMENT: http://en.doit.am/DoitCAR.zip