ESP8266 Community Forum

- Tue Nov 17, 2020 11:13 am #89487

Hi,

I got the same problem of my MacOS Big Sur since the update and I did the following :

1. Download https://github.com/espressif/esptool/archive/v3.0.zip
2. Download https://github.com/pyserial/pyserial/archive/v3.4.zip
3. Extract the contents to esptool/ and pyserial/ in the ~/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.4/tools/ folder (an equivalent must exist on Windows)

Everything works now

Hello and thanks for your information. I made the update to Big Sur last week on my MacBook Pro late 2018. I worked two days before without any problems with my ESP8266 (compilation and upload). After the update I got the same error report. During seaching a solution I found this forum.

After I changed esptool and pyserial like you described the upload was still not possible and there is still the same error report. I started all new, no success.

Does anyone has an idea what I could do more?

Thanks and best regards!

- Tue Nov 17, 2020 2:04 pm #89488 Worked for me also, thanks!

- Fri Nov 20, 2020 9:12 am #89522 Hello, thanks for the solution, you just miss to tell to remove the old folder and rename the new downloaded as esptool and pyserial

Thanks again

- Sat Nov 21, 2020 8:27 am #89530 Hello, when I told it does not work, I made a mistake by choosing the directory. Now I fixed the problem and it works fine!

Thank you very much!