Otherwise, if you built your own firmware from source code: If you build your firmware with the cloud builder or the Docker image, or any other method that produces a combined binary, then you can flash that file directly to address 0x00000. If you have an ESP-01 or other device without built-in USB, you will need to enable flashing yourself by pulling GPIO0 low or pressing a "flash" switch, while powering up or resetting the module. If you have a NodeMCU dev kit then you don't need to do anything, as the USB connection can pull GPIO0 low by asserting DTR and reset your board by asserting RTS. Conversely, for a normal boot, GPIO0 must be pulled high or floating. To enable ESP8266 firmware flashing GPIO0 pin must be pulled low before the device is reset.
![latest esp8266 firmware latest esp8266 firmware](https://pg-cdn-a2.datacaciques.com/wm/NDAy/157090301/1042452385.jpg)
dmg for macOSĭisclaimer: the availability of NodeMCU PyFlasher was announced on the NodeMCU Facebook page but it is not an official offering of the current NodeMCU firmware team. Supported platforms: anything that runs Python, runnable. Self-contained NodeMCU flasher with GUI based on esptool.py and wxPython. The easiest solution is to fully erase the chip before flashing: In some uncommon cases, the SDK init data may be invalid and NodeMCU may fail to boot.The firmware image file contains default settings dio for flash mode and 40m for flash frequency.Since this documentation may not have been able to keep up refer to the esptool flash modes documentation for current options and parameters. It's advised you run the latest version (check with esptool.py version).
![latest esp8266 firmware latest esp8266 firmware](https://www.electronicshub.org/wp-content/uploads/2017/12/Flash-ESP8266-Firmware-Image-11.jpg)