github arendst/Tasmota v9.1.0
Tasmota v9.1.0 Imogen



Migration Information

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

  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
  5. Migrate to Tasmota 7.2.0

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

  1. Migrate to Tasmota 8.1
  2. Migrate to Tasmota 8.5.1

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

  1. Migrate to Tasmota 9.1

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 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

To save resources when TLS is enabled mDNS needs to be disabled. In addition to TLS using fingerprints now also user supplied CA certs and AWS 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.

Provided Binary Downloads

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

  • tasmota.bin = The Tasmota version with most drivers. RECOMMENDED RELEASE BINARY
  • tasmota-BG.bin to tasmota-TW.bin = The Tasmota version in different languages.
  • tasmota-lite.bin = The Lite version without most drivers and sensors.
  • tasmota-knx.bin = The Knx version without some features but adds KNX support.
  • tasmota-sensors.bin = The Sensors version adds more useful sensors.
  • tasmota-ir = The InfraRed Receiver and transmitter version allowing all available protocols provided by library IRremoteESP8266 but without most other features.
  • tasmota-display.bin = The Display version without Energy Monitoring but adds display support.
  • tasmota-zbbridge.bin = The dedicated Sonoff Zigbee Bridge version.
  • tasmota-minimal.bin = The Minimal version allows intermediate OTA uploads to support larger versions and does NOT change any persistent parameter. This version should NOT be used for initial installation.

The attached binaries can also be downloaded from for ESP8266 or for ESP32. The links can be used for OTA upgrades too like OtaUrl

List of embedded modules.

Complete list of available feature and sensors.

Changelog v9.1.0 Imogen


  • Command DimmerStep 1..50 to change default dimmer up and down step of 10% by James Turton (#9733)
  • Command Gpios 255 to show all possible GPIO configurations
  • Command NoDelay for immediate backlog command execution by Erik Montnemery (#9544)
  • Command ShutterChange to increment change position (#9594)
  • Command SwitchMode 15 sending only MQTT message on switch change (#9593)
  • Command SetOption113 1 to set dimmer low on rotary dial after power off
  • Command SetOption114 1 to detach Switches from Relays and enable MQTT action state for all the SwitchModes
  • Command SwitchText to change JSON switch names by barbudor (#9691)
  • Zigbee command ZbData for better support of device specific data
  • Zigbee command ZbOccupancy to configure the time-out for PIR
  • Optional support for Mitsubishi Electric HVAC by David Gwynne (#9237)
  • Optional support for Orno WE517-Modbus energy meter by Maxime Vincent (#9353)
  • SDM630 three phase ImportActive Energy display when #define SDM630_IMPORT is enabled by Janusz Kostorz (#9124)
  • Optional support for inverted NeoPixelBus data line by enabling #define USE_WS2812_INVERTED (#8988)
  • Support for PWM dimmer color/trigger on tap, SO88 led, DGR WITH_LOCAL flag, multi-press and ledmask by Paul Diem (#9474, #9584)
  • Support for stateful ACs using StateMode in tasmota-ir.bin by Arik Yavilevich (#9472)
  • Support for analog buttons indexed within standard button range
  • Support for Vietnamese language translations by Tâm.NT
  • Support for timers in case of no-sunset permanent day by cybermaus (#9543)
  • Support for EZO sensors by Christopher Tremblay
  • Support for fixed output Hi or Lo GPIO selection
  • Support for Hass discovery of TuyaMcu and Sonoff Ifan by Federico Leoni (#9727)
  • TLS in binary tasmota-zbbridge (#9620)
  • Zigbee reduce battery drain (#9642)
  • ESP32 support for Wireless-Tag WT32-ETH01 (#9496)
  • ESP32 MI32 Beacon support, RSSI at TELEPERIOD, refactoring by Christian Baars (#9609)
  • HM10 Beacon support and refactoring by Christian Baars (#9702)
  • Initial support for iBeacons (Sensor52) on ESP32 using internal BLE by rvbglas (#9732)

Breaking Changed

  • Redesigned ESP8266 GPIO internal representation in line with ESP32 changing Template layout too
  • TLS fingerprint #define MQTT_FINGERPRINT from string to hexnumbers (#9570)
  • Command Status output for disabled status types now returns {"Command":"Error"}
  • MAX31865 driver to support up to 6 thermocouples selected by MX31865 CS instead of SSPI CS (#9103)
  • When SetOption73 1 JSON result from {"ACTION":"SINGLE"} to {"Button1":{"Action":"SINGLE"}}


  • Command Gpio17 replaces command Adc
  • Command Gpios replaces command Adcs
  • New IR Raw compact format (#9444)
  • A4988 optional microstep pin selection
  • Pulsetime to allow use for all relays with 8 interleaved so Pulsetime1 is valid for Relay1, Relay9, Relay17 etc. (#9279)
  • Management of serial baudrate (#9554)
  • Rotary driver adjusted accordingly if Mi Desk Lamp module is selected (#9399)
  • Tasmota Arduino Core v2.7.4.5 allowing webpassword over 47 characters (#9687)
  • Webserver code optimizations (#9580, #9590)
  • PlatformIO library structure redesigned for compilation speed by Jason2866
  • Zigbee flash storage refactor adding commands ZbProbe, ZbStatus2 and ZbRestore (#9641)
  • Default otaurl in my_user_config.h to
  • IRremoteESP8266 library from v2.7.10 to v2.7.11
  • NeoPixelBus library from v2.5.0.09 to v2.6.0


  • Light wakeup Exception 0 (divide by zero) when WakeupDuration is not initialised (#9466)
  • Exception 28 due to device group buffer overflow (#9459)
  • Arilux RF remote detection regression from v8.3.0
  • Ledlink blink when no network connected regression from v8.3.1.4 (#9292)
  • TuyaMcu energy display regression from v8.5.0.1 (#9547)
  • Thermostat sensor status corruption regression from v8.5.0.1 (#9449)
  • Telegram message decoding error regression from v8.5.0.1
  • Rule handling of Var or Mem using text regression from v8.5.0.1 (#9540)
  • Rule handling of JSON null regression from v8.5.0.1 (#9685)
  • Rule Break not working as expected when ONCE is enabled (#9245)
  • Rule expressions using mems corrupts character pool (#9301)
  • Shutter timing problem due to buffer overflow in calibration matrix (#9458)
  • Correct Energy period display shortly after midnight by gominoa (#9536)
  • Tuyamcu dimmers MQTT topic (#9606)
  • Scripter memory alignment (#9608)
  • Zigbee battery percentage (#9607)
  • HassAnyKey anomaly (#9601)


  • Support for direct upgrade from Tasmota versions before v7.0
  • Support for downgrade to versions before 9.0 keeping current GPIO configuration
  • Auto config update for all Friendlynames and Switchtopic from Tasmota versions before v8.0
  • Auto output selection of decimal or hexadecimal data based on user input. Now only based on SetOption17
latest releases: v9.4.0, v9.3.1, v9.3.0...
7 months ago