Tasmota-ESP-Flasher is an app for ESP8266 / ESP32 designed to make flashing Tasmota on ESPs as simple as possible by:
- Pre-built binaries for most used operating systems
- Support for Tasmota factory images
- Hiding all non-essential options for flashing
- All necessary options (bootloader, flash mode, safeboot) are set automatically
- Flashing is lightning fast
- Full ANSI color support for colored terminal output
- Interactive serial monitor with command input support (with history buffer)
The flashing process is done using esptool from espressif.
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Check the releases section for your OS.
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Download and double-click and it'll start.
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The native Python version can be installed from PyPI:
pip install esp-flasher. Start the GUI byesp_flasher. Alternatively, you can use the command line interface ( typeesp_flasher -hfor info) -
Only Linux:
sudo usermod -a -G dialout $(whoami)after the command has fired and a relogin the Flasher can access the serial ports and flash away
The flashing process is straightforward and consists of a few simple steps:
Connect your ESP device via USB and select the correct serial port from the dropdown menu.
Click the "Connect" button to establish a connection with your ESP device.
Click "Select Firmware" to choose the matching Tasmota (factory) firmware file (.bin) to the connected espressif MCU.
Click "Flash ESP" to begin the flashing process. The progress bar shows the current status.
Once flashing is complete, you'll see a success message. Your device is now ready to use.
The ESP Flasher includes WiFi Improv protocol support, allowing you to configure WiFi credentials on your ESP device without connecting to a web interface or access point.
How to use WiFi Improv:
- After flashing your device, keep it connected via USB
- Click the
Improv WiFibutton to launch the Improv client - Click the
Scan Networksbutton to search for available WiFi networks - Double-click the WiFi network you want to connect to
- The
SSIDfield will be automatically filled with the selected network name - Enter your password in the
Passwordfield and click theProvisionbutton - The device will connect to your WiFi network and display the assigned IP address
Benefits:
- No need to connect to a temporary access point
- Secure credential transfer over USB
- Faster initial setup process
- Works immediately after flashing
For more details on the Improv protocol, visit Improv WiFi.
Tasmota ESP Flasher and Tasmota ESP Flasher Wiki
In the odd case of your antivirus going haywire over that application, it's a false positive.
If you want to build this application yourself you need to:
- Install Python >= 3.9
- Download this project and run
pip3 install -e .in the project's root. - Start the GUI using
esp_flasher. Alternatively, you can use the command line interface ( typeesp_flasher -hfor info)
To create a standalone binary, use PyInstaller with the provided spec file:
pip install -r requirements.txt -r requirements_build.txt
pyinstaller ESP-Flasher.specFor detailed build instructions, see build-instructions.md.
Driver maybe needed for Mac OSx.
Info: https://www.silabs.com/community/interface/forum.topic.html/vcp_driver_for_macosbigsur110x-krlP
Driver: https://www.silabs.com/documents/public/software/Mac_OSX_VCP_Driver.zip
MIT © Otto Winter, Michael Kandziora, Johann Obermeier

