The Simple Guide to Flashing Your ESP8266 Firmware : 20 Steps
Note that the progress pane indicated “Failed to leave flash mode”. That’s probably because the flashing program doesn’t have any way to bring the ESP8266 board out of programming mode. You may have to install pySerial manually by running something like pip install pyserial, easy_install pyserial or apt-get install python-serial,… Read More »The Simple Guide to Flashing Your ESP8266 Firmware : 20 Steps