esp-prog esp32module Download mode successfully detected, but getting no sync reply: The serial TX path seems to be down (ESPTOOL-482)

[wpp1017]

Operating System

macos 12.1

Esptool Version

v4.0.1

Python Version

3.9.9

Chip Description

esp32 wrover

Device Description

A fatal error occurred: Failed to connect to ESP32: Download mode successfully detected, but getting no sync reply: The serial TX path seems to be down.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html

Hardware Configuration

No response

How is Esptool Run

vscode terminal

Full Esptool Command Line that Was Run

esptool.py --trace --chip esp32 --port /dev/cu.usbserial-14601 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0xd000 printcart_simple.bin

Esptool Output

No response

More Information

Other Steps to Reproduce

No response

I Have Read the Troubleshooting Guide

• I confirm I have read the troubleshooting guide.

[dobairoland]

Hi @wpp1017. I assume that you are able to flash the board through the micro-USB port.

I believe it is not possible to flash the board as you've connected. I remember that I've tried it once by myself. The issue is that to the same TxD, RxD port is connected the automatic reset circuitry of the USB-to-UART chip.

You should be able to flash an ESP32 module but not a board.