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esptool.py — Bootloader utility for Espressif chips (e.g. ESP8266). More information: <https://docs.espressif.com

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commandbootloaderesptool.pyclichipsespressifforutility

Problem

How to use the esptool.py command: Bootloader utility for Espressif chips (e.g. ESP8266). More information: <https://docs.espressif.com/projects/esptool/en/latest/esp32/>.

Solution

esptool.py — Bootloader utility for Espressif chips (e.g. ESP8266). More information: <https://docs.espressif.com/projects/esptool/en/latest/esp32/>.

Flash a firmware file to an ESP chip with a given port and baud rate:

sudo esptool.py --port {{port}} --baud {{baud_rate}} write_flash 0x0 {{path/to/firmware.bin}}

Clear the flash of an ESP chip:

sudo esptool.py --port {{port}} --baud {{baud_rate}} erase_flash

Code Snippets

Flash a firmware file to an ESP chip with a given port and baud rate

sudo esptool.py --port {{port}} --baud {{baud_rate}} write_flash 0x0 {{path/to/firmware.bin}}

Clear the flash of an ESP chip

sudo esptool.py --port {{port}} --baud {{baud_rate}} erase_flash

Context

tldr-pages: common/esptool.py

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