ESP8266 Community Forum

Posted: **Wed Nov 27, 2019 2:52 am**

Hello,

I'm using wemos D1 mini from years, usually with nodemcu lua firmware. I got strange problem when I use arduino IDE on that board to write/test something it work fine, after that if try to flash MicroPython or Nodemcu it flash well, but not power up. Led start blinking without end, serial monitor drop garbage on screen.
If flash with arduino IDE again, it work with it.
Board is kind-a bricked/locked with arduino IDE code upload now

I got 2 boards like this. Any idea how to fix it?

Posted: **Thu Nov 28, 2019 3:58 am**

Have you tried erasing the entire flash memory first, before uploading something else? :idea:

Alternatively you could use the esptool with the erase_flash option:

Code: Select allesptool.py -p COM3 -b 115200 erase_flash

Of course you have to set the correct COM-port and Baud-rate to your set up.

ESP8266 Community Forum

cannot use nodemcu -ua or micropython after arduino IDE

cannot use nodemcu -ua or micropython after arduino IDE

Re: cannot use nodemcu -ua or micropython after arduino IDE