• download from - https://www.espressif.com.cn/en/support/download/other-tools

ESP8266

SPI Speed

  • 40 Mhz
  • 80 Mhz

SPI Mode

  • QIO
  • DIO
  • DOUT
Model SPI Speed SPI Mode Speed
ESP-12F 40MHz QIO 1 500 000

NWI1139

SPI = 40Mhz, SPI Mode = DOUT, speed up to 1.5M (1 500 000, for CH340)

NWI1126

ESP32-C3 Factory Mode

  • Chip = ESP32-C3
  • Mode = Factory
  • LoadMode = UART

setup

  • Flash Frequency: 40M or 80M
  • SPI Mode: QIO or DIO

wiring with USB-TTL cable

  • Red = 5V+ Power Supply = pin1 = +5V or VCC
  • Green - TXD
  • White - RXD
  • GND - Ground

Common Error

5-chip efuse check fail

Upload

ESP32-C3

  • flash speed 80M
  • flash mode DIO