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Created Upgrading (markdown)
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Easily upgrade Tasmota to a newer version or different build while keeping all your settings.
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# OTA upgrade
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Most convenient way to upgrade. Open a web browser to you device's Web UI and select Firmware Upgrade.
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You are presented with two choices. Using an OTA server or by uploading a downloaded or self-compiled binary file.
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## Upgrade by web server
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If you want to upgrade to the latest release version click the first **Start Upgrade** button. This screen should appear
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During this process Tasmota will download the new firmware from the url and install it. It might need to download **sonoff-minimal.bin** first but all that happens automatically. All you have to do is **wait 2 to 5 minutes**.
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After the upgrade is completed you can reconnect back to the Web UI and check the firmware version on the bottom of the page.
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### Changing Ota Url
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If you wish to switch to a different [build](Builds) you have to change Ota Url to the desired binary from our [OTA Server](http://thehackbox.org/tasmota/release/).
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It is also possible to create your own http OTA server (https is not supported) and perform upgrades from there.
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Guide to setting up a [**Python HTTP OTA server**](Python-HTTP-OTA-Server).
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### OTA upgrade using commands
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Your device can be upgraded using [commands](Commands) via MQTT, web requests or Console in the Web UI.
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[OtaUrl](Commands#OtaUrl) is used to set your OTA address.
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```lua
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otaurl http://thehackbox.org/tasmota/020500/sonoff-sensors.bin
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```
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*In this example we chose a development branch version with additional sensors support based on a 2.5 core*
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Initiate [upgrade](Commands#upgrade) from OTA server
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```lua
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upgrade 1
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```
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Wait for the upgrade process to complete and check the Tasmota version. If in console you can use `status 2`.
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## Upgrade by file upload
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This process requires you to have a minimal build ([sonoff-minimal.bin](http://thehackbox.org/tasmota/release/sonoff-minimal.bin)) of the firmware since the upload process needs the space in flash memory to upload the new binary.
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When you try to immediately upgrade to a new binary without using minimal firmware you will be greeted with this error.
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Browse to the minimal binary with **Choose File**. The chosen filename should be visible. *In our example we use **sonoff-minimal.bin***
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Wait until the device restarts. Web UI will display this warning message on top.
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Go to **Firmware Upgrade** again. This time browse to the binary you want to upgrade to with **Choose File** and click **Start upgrade**. *In our example we use **sonoff-sensors.bin***
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You will see an **Upload starting...** and then **Upload successful** message. Wait until the device restarts, reconnect back to the Web UI and check the firmware version on the bottom of the page.
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# Serial upgrade
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Upgrade over the serial connection using serial-to-USB adapter.
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Upload the new version over serial using the same process as in [Flashing](Flashing) but DO NOT erase flash. The new binary will flash over the old one and keep all your settings intact.
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# External programs
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[**Tasmota Device Manager**](https://github.com/jziolkowski/tdm) or TDM is a multiplatform GUI application written in Python for discovery and management of Tasmota devices.
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You can set up OTA url and initiate OTA upgrade from TDM using GUI.
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[**openHAB**](https://github.com/arendst/Sonoff-Tasmota/wiki/openHAB#maintenance-actions) - implement an automation rule to upgrade devices from openHAB
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[**Node-RED OTA server and firmware manager**](https://flows.nodered.org/flow/888b4cd95250197eb429b2f40d188185) - [Node-RED](https://nodered.org/) flow for managing OTA updates
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[**OTA over SCP**](OTA-over-SCP) - setup and configure "OTA over SCP" upload for PlatformIO
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# Migration path for older releases
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Until now several versions of Tasmota have been released starting with the C version Sonoff-MQTT-OTA followed by Sonoff-MQTT-OTA-Arduino and Sonoff-Tasmota.
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Migrating from one version to the next is mostly painless as the settings are saved in the same location in flash and newer settings are appended.
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As said, mostly painless. There are some deviations to this rule as the flash positions got rearranged. In the next list you'll find an overview of supported migrations paths.
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* No migration from **Sonoff-MQTT-OTA** to **Sonoff-MQTT-OTA-Arduino** or **Sonoff-Tasmota**.<br/>The settings flash layout and OTA image locations are different from the Arduino versions
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* Easy migration from **Sonoff-MQTT-OTA-Arduino 1.0.11** to **Sonoff-Tasmota 3.9.x**.<br/>After installing Sonoff-Tasmota for the first time some settings need to be adjusted via web configuration or MQTT commands.
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* Easy migration from **Sonoff-MQTT-OTA-Arduino 3.1.0** to **Sonoff-Tasmota 4.x**.<br/>After installing Sonoff-Tasmota for the first time some settings need to be adjusted via web configuration or MQTT commands.
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* Easy migration from **Sonoff-Tasmota 4.x** to **Sonoff-Tasmota 5.14**.<br/>As a safeguard perform a **Backup Configuration** before installing the new version. If settings are lost after the upgrade perform a **Restore Configuration**.
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* Easy migration from **Sonoff-Tasmota 5.2** to **Sonoff-Tasmota 6.x**.<br/>As a safeguard perform a **Backup Configuration** before installing the new version. If settings are lost after the upgrade perform a **Restore Configuration**.
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So to migrate from **Sonoff-MQTT-OTA-Arduino versions before 3.1.0** to **Sonoff-Tasmota 6.x** you will need to take four steps:
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1. Migrate to **Sonoff-Tasmota 3.9.x**
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2. Migrate to **Sonoff-Tasmota 4.x**
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3. Migrate to **Sonoff-Tasmota 5.14**
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4. Migrate to **Sonoff-Tasmota 6.x**
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