A “flasher” program to update the firmware.The LED is optional and GPIO 0 should be grounded The same breadboard setup as in my ESP8266-WiFi-Module-for-Dummies instructable.In this instructable I’ll show you how to install the factory firmware and how to use some “AT” commands to make your ESP8266 do things. The last factory version produced (Version 2 – July 2016) though should be good enough for most purposes. There is however a handy facility that has been provided for you to generate customised firmware with the components according to your needs.See: The files have become so large that they might not fit onto all modules.

The “Factory” have in fact stopped producing new firmware. There are many versions and flavours out there. There isn’t really a “Standard” Factory version of firmware. Your code is the firmware! So you don't need to worry about this. If you intend only uploading your own code to the ESP8266 then you don’t need to restore the factory firmware to the ESP8266. It’s a continuation of the other instructable: This instructable is about updating or reverting the firmware on your ESP8266 to the Factory version.

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