Unable to install Airgradient 4.2 presoldered

[dacorde]

I am new on ESPHome and it is impossible to install this device.

I have followed instructions but I get this error:
ERROR Connecting to 192.168.18.191:8266 failed: [Errno 111] Connection refused

Device is connected to my router with the IP above. During installation it does not recognize the connected device, so I tried "use_address" and static ip.

wifi:
networks:

• ssid: "myssid"
  password: "mypassword"
  reboot_timeout: 15min
  use_address: 192.168.18.191

Please help!

[dacorde]

Please help

[dacorde]

Answering myself: first time flashing firmware should be though ESP8266 usb. Yes , I'm a newbie :-) everything working!
This firmware looks to be the most recent one: https://github.com/MallocArray/airgradient_esphome
Working great!