Flashing:
 esptool.py --port /dev/ttyUSB0 erase_flash
 esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 esp8266-20190125-v1.10.bin

Setting up webrepl:
 Connect using picocom:
  $ picocom /dev/ttyUSB0 -b115200
   
  >>> import webrepl_setup
  -> enable, set password and reboot

  Connect to local wifi:
  >>> import network
  >>> sta_if = network.WLAN(network.STA_IF)
  >>> sta_if.active(True)
  >>> sta_if.connect("<SSID>", "<PW>")
  >>> sta_if.ifconfig() # this prints the IP

  Use access point to connect:
  >>> import network
  >>> ap_if = network.WLAN(network.AP_IF)
  >>> ap_if.active(True)
  >>> ap_if.ifconfig() # this prints the IP

  Default passwort for the access point: micropythoN

Connect via online Webrepl:
  -> http://micropython.org/webrepl
 - Enter IP from above and click connect. Login with password.
 - Upload boot.py via Webrepl to automatically connect to wifi and start webrepl after reboot
 - You can also upload a file called main.py or just work in the webrepl terminal.