ESP32 Forum

Posted: **Mon Jun 21, 2021 2:47 am**

When I try to write the latest micropython firmware "esp32-20210618-v1.16.bin" for esp32 serial chips, esptool shows the chip id is unknown (version 3). And when I use a python ide like Thonny to connect to my board (ESP32-C3-DevKitM-1), it keeps printing "invalid header: 0xffffffff". The same method works on another board based on ESP32-WROOM-32.

I have tried different firmwares and different versions of python but it doesn't work.

Posted: **Mon Jun 21, 2021 3:09 am**

The ESP32 and the ESP32-C3 are not binary compatible. You would need a version of MicroPython specifically compiled for the -C3 if you want that to work.

ESP32 Forum

Problem occurs while writing micropython firmware to ESP32-C3.

Problem occurs while writing micropython firmware to ESP32-C3.

Re: Problem occurs while writing micropython firmware to ESP32-C3.