ESP8266 Build and flash the firmware is a very easy job. before that, you need to choose the correct esp8266 platform (Arduino Core, AT Command, NodeMCU, Mangoes OS, Micro-python) for your requirements. First, you should know,
- What is esp8266 firmware? esp8266 Firmware contains a collection of library files or binary files.
- Why need to flash Firmware into esp8266? like when we think, we can’t able to write all the code ourselves. so we will follow some open source. if you use open source you need to flash the selected open source library file into esp8266 before starting your application.