Sonoff device discovered, can not configure in HA

ESPHome
1

I try to reenable Sonoff basic device that I previously used. When plugged to power, HA discovers device and even recognizes as it has same name I gave it some years ago. I then click on “Configure” button and get following message “Can’t connect to ESP. Please make sure your YAML file contains an ‘api:’ line.” This device does not appear among devices on my router, not sure how HA discovers it, but seems I am stuck, can not “configure” and check YAML. I guess my only way is to reflash it using serial converter, or? I have the file I initially loaded few years ago and that file contains below lines, so I am not sure why error message suggest I need to add api line to yaml

api:
  encryption:
    key: Z3JldGE3MzYK

Similar story with earlier used Sonoff POWR2 unit, same error message when I try to configure it in HA. This one however appears among devices on my router and I can log on to device via it’s web interface. Could update yaml OTA, just did not save my original file somewhere, so I need to generate new file or find the copy I can use.

Any other ideas to tackle this issue?

2

If HA detects it, it must be on your lan, even if briefly.

Try putting the original yaml file in your esphome directory, probably /config/esphome.

But yes you can usually flash via serial.

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