Failed to connect to ESP32: Invalid head of packet (0x1B)

ESPHome
1

I’m trying to flash ESPHome onto this Nodemcu-32S board. I go through all the normal steps to flash the device but end up with this error:

A fatal error occurred: Failed to connect to ESP32: Invalid head of packet (0x1B)
*** [upload] Error 2

I’ve tried 3 different times. I’ve tried rebooting HA, and erasing then reinstalling the ESPhome config for the device. When the Nodemcu-32s is plugged in to the USB port the LED on the board is red, in case that matters.

Any ideas how to get past this?

2

Have you tried holding down the button while flashing?

3

Welp, I feel like an idiot. I had no idea you had to hold down the button. That should be added to the ESPhome documentation. That worked.

1 Like
4

I have never had an esp32 that needed that, but it was on the amazon page you bought it from :slight_smile: See the review from Edward Smith

https://www.amazon.com/gp/customer-reviews/R251QZE40R5BWW/ref=cm_cr_dp_d_rvw_ttl?ie=UTF8&ASIN=B0718T232Z

1 Like
5

What works for me a little bit more specific, The button “BOOT”, and it is enough to press and hold at the moment when uploading to USB is mentioned:

image

Be patient and when using OTA take care of good environment for the ESP antenna.

(my device: ESP-WROOM-32)

1 Like
6

works like a charm. thank u so much