Flash Download Tool
- download from - https://www.espressif.com.cn/en/support/download/other-tools
NWI1139
SPI = 40Mhz SPI Mode = DOUT for CH340, speed up to 1 500 000 = 1.5M
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
ESP32-C3 Enter into Flash Mode
- Connect wiring first
- Hold down IO9
- Press EN or RST button to restart the module, and enter into flash mode