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Use arduino IDE

  • Please see the guideline image on the right, this will be used in esp flash download tool, arduino IDE, etc
Option value Description
flash mode QIO -
flash frequency 40mhz -
upload using "serial" in arduino IDE
CPU frequency 80mhz -
flash size 4MBytes / 32Mbit (3M SPIFSS) old ESP8266 board should use 4Mbit (512Mbytes)
reset mode nodemcu -
upload speed 115200 up to 576000 is fine, speed up the flashing progress
upload port choose your own serial port -
crystal frequency 26mhz in esp flash download tool