Invalid head of packet (0x0C) (ESPTOOL-963)

[Saturna19-fr]

Operating System

Windows NT 11

Esptool Version

v4.8.1

Python Version

Python 3.11.9

Chip Description

ESP-8266EX

Device Description

WEMOS D1 Mini

Hardware Configuration

GPIO 4 is connected to a Led Strip

How is Esptool Run

No IDE

Full Esptool Command Line that Was Run

esptool --trace write_flash 0x0 ./WLED_0.15.0-b7_ESP8266.bin

Esptool Output

Too long for github: https://pastebin.com/Vfk9yhAU

More Information

It worked before I welded everything together.

Other Steps to Reproduce

No response

I Have Read the Troubleshooting Guide

• I confirm I have read the troubleshooting guide.

[Honza0297]

Hello @Saturna19-fr!
It seems your board cannot get in sync with esptool.
If it worked before you soldered everything, it is most probably a HW issue, but we can try to give it a shot and debug it:

• Can you confirm you are using GPIO4 (on Wemos D1 mini, it is marked as D2)?
• Can you check whether the solder joint is correct? E.g. if it does not short neighboring pins?