Pyserial or esptool directories not found

 

1. Download https://github.com/espressif/esptool/archive/v3.0.zip
2. Download https://github.com/pyserial/pyserial/archive/v3.4.zip
3. Unzip them (if needed)
4. go to ~/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.4/tools/
5. Erase esptool and pyserial folders and replace with what you installed
6. Rename those folders pyserial and esptool (erase the numbers and spaces)

    7. Restart Arduino and you are good to go. The thing here is to be sure that you erased the version numbers  and leave just "esptool" and "pyserial" names, if you don't Arduino will not recognise it and will still give errors.