Christian Alvarado ckevar

## HowTo.md

      
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              May 30, 2024 05:24
            
              
                HowTo Upgrade Firmware AT2.2.1. on the ESP8266
              
          
    HowTo ESP8266-IDF-AT-V2.2.1

How to flash the ESP82666-AT-V2.2.1.0 firmware in the ESP8266 device
This method has been tested in an ESP8266EX device. It might be usefull for others ESP8266 devices as well. This is based on the guide by sigmdel and this discussion on esp32.com by DataDigger.
Requirements


ESP8266-IDF-AT_v2.2.1.0 from espressif.com
esptool.py
First clone the esptool;