See [wiki migration path](https://github.com/arendst/Sonoff-Tasmota/wiki/Upgrade#migration-path) for instructions how to migrate to a major version. Pay attention to the following version breaks due to dynamic settings updates:
TLS is supported on core 2.4.2 and up. 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. See full documentation on https://github.com/arendst/Sonoff-Tasmota/wiki/AWS-IoT
## Core version 2.3.0 vs 2.4.2 vs 2.5.2
This release is based on ESP8266/Arduino library core 2.3.0 as some people encountered wifi related issues on core 2.4.2 and 2.5.2. For others core 2.4.2 or 2.5.2 is working just fine. All version are available from http://thehackbox.org/tasmota/release/
- **sonoff-sensors.bin** = The Sensors version without Wps and SmartConfig configuration but adds even more useful sensors.
- **sonoff-display.bin** = The Display version without Wps and SmartConfig configuration and Energy Monitoring but adds display support.
- **sonoff-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**.
Core version **2.4.2** binaries can be found at http://thehackbox.org/tasmota/release/020402/
* Fix core 2.5.x ISR not in IRAM exception (#5837)
* Fix Philips Hue emulation Alexa issue by using part of MAC address for LightId (#5849)
* Fix missing white channel for WS2812 (#5869)
* Fix PZem startup issue (#5875)
* Fix exception 9 when syslog is enabled and NTP is just synced (#5917)
* Fix Toggle functionality to button double press when one button and two devices are detected (#5935)
* Fix command ``Channel`` for dual dimmers (#5940)
* Fix not restoring white value on power off/power on (#5993)
* Add command ``AdcParam`` to control ADC0 Temperature and Light formula parameters
* Add command ``LedMask`` to assign which relay has access to power LED (#5602, #5612)
* Add extended LED power control using command ``LedPowerX`` where X is 1 to 4. Enabled when "LedLink(i)" is configured too (#5709)
* Add command ``Sensor20 1..255`` to change Nova Fitness SDS01 working period in minutes (#5452)
* Add command ``SetOption38 6..255`` to set IRReceive protocol detection sensitivity mimizing UNKNOWN protocols (#5853)
* Add command ``SetOption39 1..255`` to control CSE7766 (Pow R2) or HLW8032 (Blitzwolf SHP5) handling of power loads below 6W. Default setting is 128 (#5756)
* Add command ``SetOption40 0..250`` to disable button functionality if activated for over 0.1 second. Needs SetOption1 1 and SetOption13 0 (#5449)
* Add command ``SetOption63 0/1`` to disable relay state feedback scan at restart (#5594, #5663)
* Add command ``SetOption64 0/1`` to switch between "-" or "_" as sensor index separator impacting DS18X20, DHT, BMP and SHT3X sensor names (#5689)
* Add command ``SetOption65 0/1`` and more Tuya Serial based device support (#5815)
* Add command ``WebColor`` to change GUI colors on the fly
* Add support for AWS IoT with TLS 1.2 on core 2.4.2 and up. Full doc here: https://github.com/arendst/Sonoff-Tasmota/wiki/AWS-IoT
* Add support for Badger HR-E Water Meter (#5539)
* Add support for Shelly 2.5 Energy and overtemp Monitoring (#5592)
* Add support for color and colortone for Philips Hue emulation via Alexa (#5600 #4809)
* Add support for Scripts as replacement for Rules. Default disabled but can be enabled in my_user_config.h (#5689)
* Add support for up to four LEDs related to four power outputs. Enabled when "LedLink(i)" is configured too (#5709)
* Add support for Shelly 1PM Template ``{"NAME":"Shelly 1PM","GPIO":[56,0,0,0,82,134,0,0,0,0,0,21,0],"FLAG":2,"BASE":18}`` (#5716)
* Add support for SPS30 Particle sensor thanks to Gerhard Mutz (#5830)
* Add support for VL53L0x time of flight sensor. Might interfere with TSL2561 using same I2C address (#5845)
* Add support for Sonoff L1 thanks to reef-actor (#6002)
* Add rule Http#Initialized
* Add rule System#Save executed just before a planned restart
* Add rule support for single JSON value pair like {"SSerialReceived":"on"} by expanding it to {"SSerialReceived":{"Data":"on"}} allowing for trigger SSerialReceived#Data=on (#5638)
* Add define USE_COUNTER to my_user_config.h to save space in sonoff-basic.bin and sonoff-minimal.bin
* Add define USE_DHT to my_user_config.h to save space in sonoff-basic.bin
* Add defines USE_EMULATION_WEMO and USE_EMULATION_HUE to my_user_config.h to control emulation features at compile time (#5826)
* Add Toggle functionality to button double press when more devices are detected
* Add device OverTemp (>73 Celsius) detection to Energy Monitoring devices with temperature sensor powering off all outputs
* Add Tuya Dimmer 10 second heartbeat serial packet required by some Tuya dimmer secondary MCUs
* Add all temperature, humidity and pressure for global access
* Add validation check when loading settings from flash
* Add HX711 weight restore after controlled restart or after power restore just before executing command Sensor34 7 (#5367, #5786)
* Add GUI hexadecimal color options in my_user_config.h (#5586)
* Add alternative ``IRSend`` command syntax ``IRSend raw,<freq>,<headermark>,<headerspace>,<bitmark>,<zerospace>,<onespace>,<bitstream>`` (#5610)
* Add user configurable ADC0 to Module and Template configuration compatible with current FLAG options (#5671)
* Add AriLux RF control GPIO option "ALux IrSel" (159) replacing "Led4i" (59) for full LED control (#5709)
* Add LED GPIO option "LedLink" (157) and "LedLinki" (158) to select dedicated link status LED (#5709)
* Add all 5 PWM channels individually adressable with LEDs. (#5741)
* Add reset of Energy values when connection to sensor is lost for over 4 seconds (#5874, #5881)
* Add checkbox to GUI password field enabling visibility during password entry only (#5934)
