You are reading a single comment by @Stephen and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Stephen
No pretty sure it was in normal mode, I tried many times. I also upgraded another one without the x100 change and all went fine. It's a long shot but maybe my mobile phone was too close to it, the guys at esptool said these errors can be caused by electrical interfearance.