Thank you for the quick response! I have multiple eggs which all have the same hardware, then I would need to replace the Wi-Fi board on all of them. I was also looking for the old firmware for my device (with the ESP8266 chip) and the 2.1 firmware, but couldn't find neither of them. Only two I found were https://github.com/jmsaavedra/Air-Quality-Egg and https://github.com/wickeddevice/AQEV2FW. Am I missing something?
Thank you!