The use of the ESP8266 in the world of IoT

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By Muhammad Naufil
#86178 I need to change WiFi credentials of multiple ESP8266 in one go, without needing to change passwords for each of them individually. I know there is a WiFiManager library, which makes your ESP8266 access point when not connected to any network, but that will require me configure each of them individually.

How can I save the fatigue of changing their wifi credentials individually? All of them needs to connect to the same network, whose password is recently changed.