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RELEASE NOTES

Migration Information

This version removes support for direct migration from versions before v8.1.0 (Doris)

See migration path for instructions how to migrate to a major version. Pay attention to the following version breaks due to dynamic settings updates:

Do not upgrade from minimal to minimal version. It will most likely fail at some point and will require flashing via serial. If you do have to use minimal versions, always OTA to a full version of the same release before applying next minimal version.

  1. Migrate to Sonoff-Tasmota 3.9.x
  2. Migrate to Sonoff-Tasmota 4.x
  3. Migrate to Sonoff-Tasmota 5.14
  4. Migrate to Sonoff-Tasmota 6.7.1 (http://ota.tasmota.com/tasmota/release-6.7.1/)
  5. Migrate to Tasmota 7.2.0 (http://ota.tasmota.com/tasmota/release-7.2.0/)

--- Major change in parameter storage layout ---

  1. Migrate to Tasmota 8.5.1 (http://ota.tasmota.com/tasmota/release-8.5.1/)

--- Major change in internal GPIO function representation ---

  1. Migrate to Tasmota 9.1 (http://ota.tasmota.com/tasmota/release-9.1.0/)

While fallback or downgrading is common practice it was never supported due to Settings additions or changes in newer releases. Starting with release v9.1.0 Imogen the internal GPIO function representation has changed in such a way that fallback is only possible to the latest GPIO configuration before installing v9.1.0.

Supported Core versions

This release will be supported from ESP8266/Arduino library Core version 2.7.4.9 due to reported security and stability issues on previous Core version. This will also support gzipped binaries.

Support of Core versions before 2.7.1 has been removed.

Support of TLS

In addition to TLS using fingerprints now also user supplied CA certs, AWS IoT and Azure IoT is supported. Read full documentation

Initial configuration tools

For initial configuration this release supports Webserver based WifiManager or Serial based command interface only. Support for WPS and SmartConfig has been removed.

Initial installation

Easy initial installation of Tasmota can be performed using the Tasmota WebInstaller.

Provided Binary Downloads

ESP8266 or ESP8285 based

The following binary downloads have been compiled with ESP8266/Arduino library core version 2.7.4.9.

  • tasmota.bin = The Tasmota version with most drivers for 1M+ flash. RECOMMENDED RELEASE BINARY
  • tasmota-AF.bin to tasmota-VN.bin = The Tasmota version in different languages for 1M+ flash.
  • tasmota-lite.bin = The Lite version without most drivers and sensors for 1M+ flash.
  • tasmota-knx.bin = The Knx version without some features but adds KNX support for 1M+ flash.
  • tasmota-sensors.bin = The Sensors version adds more useful sensors for 1M+ flash.
  • tasmota-ir.bin = The InfraRed Receiver and transmitter version allowing all available protocols provided by library IRremoteESP8266 but without most other features for 1M+ flash.
  • tasmota-display.bin = The Display version without Energy Monitoring but adds display support for 1M+ flash.
  • tasmota-zbbridge.bin = The dedicated Sonoff Zigbee Bridge version for 2M+ flash.
  • tasmota-zigbee.bin = The dedicated cc25xx Zigbee Bridge version for 4M+ flash.

Above binaries are also available as gzipped version allowing faster uploads.

Latest released binaries can be downloaded from

Historical binaries can be downloaded from

The latter links can be used for OTA upgrades too like OtaUrl http://ota.tasmota.com/tasmota/release/tasmota.bin.gz

ESP32 based

The following binary downloads have been compiled with ESP32/Arduino library core version 2.0.1.1.

  • tasmota32.bin = The Tasmota version with most drivers including additional sensors and KNX for 4M+ flash. RECOMMENDED RELEASE BINARY
  • tasmota32c3.bin = The Tasmota version with most drivers including additional sensors and KNX for ESP32-C3 and 4M+ flash.
  • tasmota32solo1.bin = The Tasmota version with most drivers including additional sensors and KNX for single core ESP32 and 4M+ flash.
  • tasmota32-AF.bin to tasmota32-VN.bin = The Tasmota version in different languages for 4M+ flash.
  • tasmota32-ir.bin = The InfraRed Receiver and transmitter version allowing all available protocols provided by library IRremoteESP8266 but without most other features for 4M+ flash.
  • tasmota32-display.bin = The Display version without Energy Monitoring but adds display support for 4M+ flash.
  • tasmota32-lvgl.bin = The LVGL version adds Light and Versatile Graphics Library (LVGL) display support for 4M+ flash.
  • tasmota32-webcam.bin = The Webcam version adds webcam support for 4M+ flash.
  • tasmota32-bluetooth.bin = The Bluetooth version adds BLE support for 4M+ flash.
  • tasmota32-odroidgo.bin = The Odroid-Go version is specifically tailored to Odroid_go hardware for 8M+ flash.
  • tasmota32-core2.bin = The Core2 version is specifically tailored to M5Stack Core2 hardware for 8M+ flash.

Latest released binaries can be downloaded from

Historical binaries can be downloaded from

The latter links can be used for OTA upgrades too like OtaUrl http://ota.tasmota.com/tasmota32/release/tasmota32.bin

Additional information

List of embedded modules.

Complete list of available feature and sensors.

Changelog v2022.01.2

Added

  • Command SSerialConfig <serialconfig> to change Serial Bridge configuration
  • Command SspmMap 2,1,.. to map Sonoff SPM scanned module to physical module #14281
  • Commands for ESP32 ethernet configuration EthIpAddress, EthGateway, EthSubnetmask, EthDnsServer1 and EthDnsServer2 #14385
  • PWM Dimmer two button support #13993
  • Support for Linkind dimmer as GPIO Option A6 #14004
  • DDP schemes for light and WS2812 #14017
  • Device Group Send full status item #14045
  • Support for MAX7219 Dot Matrix displays #14091
  • Experimental ADE7953 (Shelly EM) reset on restart #14261
  • Solax X1 negative temperature support #14278
  • Solax X1 modbus RTS support and offline status #14305
  • Tasmota favicon to webbrowser tab #14322
  • ESP32 single binary firmware #14239
  • ESP32 support for TuyaMcu
  • ESP32 Berry features
  • ESP32 support for USE_PWM_DIMMER as GPIO Option E1

Breaking Changed

Changed

  • PubSubClient library from v2.8.12 to v2.8.13
  • TasmotaSerial library from v3.3.0 to v3.4.0
  • TasmotaModbus library from v1.2.0 to v3.4.0
  • ESP8266Audio library from v1.9.2 to v1.9.5
  • ESP8266SAM library from v1.0 to v1.0.1
  • From Semantic Versioning (SemVer) to Calendar Versioning (CalVer)
  • Mitsubishi HVAC temperature resolution #13936
  • Remove restriction of topic must differ from mqttclient #14019
  • ESP32 Set stack size with #define SET_ESP32_STACK_SIZE, added StackLowMark metrics
  • ESP32 Berry stores compiled bytecode into IRAM, freeing space in heap #14307

Fixed

  • Intermittent exceptions and heap corruption due to PubSubClient library buffer overflow #13700
  • EZOO2 sensor message format #14000
  • DHT support negative temperatures on different hardware #14173
  • Hardware serial parity and stop bits support #14212
  • Edit file for SD card #14229
  • Scripter memory corruption #14268
  • ESP32 Webcam exception during flashwrites
  • ESP32 LedPwmMode exception #14073
  • ESP32 Compile error when I2S_Audio is enabled #14095
  • ESP32 Provide proper OTA_URL for tasmota32solo1 #14202

Removed