• I got the same problem:

    root@raspberry:/home/pi/espurna# stty</dev/serial0
    speed 38400 baud; line = 0;
    min = 1; time = 0;
    -brkint -icrnl -imaxbel
    -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke

    root@raspberry:/home/pi/espurna# time ./esptool.py -p /dev/serial0 write_flash 0x1000 espurna-1.13.2-itead-sonoff-th.bin
    Serial port /dev/serial0
    Detecting chip type... ESP8266
    Chip is ESP8266EX
    Features: WiFi
    MAC: dc:4f:22:41:9c:58
    Uploading stub...

    A fatal error occurred: Failed to write to target RAM (result was 0107)

    real 0m2,423s
    user 0m0,412s
    sys 0m0,057s

    I am using Raspberry Pi GPIO TXD0, RXD0 and GND. Sonoff is powered by its own power supply (240VAC, I am a professional electrician).

    Any quesses what can cause this ?


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