MQTT Automation to update all Shellies to the latest firmware

update_shelly_firmware_via_MQTT.yaml

blueprint:
  # Please note that during a firmware update, lights connected to Shellies may flash, and devices may lose power
  name: Update Shelly Device Firmware via MQTT for all connected devices
  description: Use MQTT to update all connected Shellies to the latest firmware. Please select the day you want the automation to check for new firmware updates.
  domain: automation
  input:
    # Create a variable to capture the intended day for the automation to run, inspired by delphiki (https://community.home-assistant.io/u/delphiki)
    monday_enabled:
      name: Monday
      default: false
      selector:
        boolean:
    tuesday_enabled:
      name: Tuesday
      default: false
      selector:
        boolean:
    wednesday_enabled:
      name: Wednesday
      default: false
      selector:
        boolean:
    thursday_enabled:
      name: Thursday
      default: false
      selector:
        boolean:
    friday_enabled:
      name: Friday
      default: false
      selector:
        boolean:
    saturday_enabled:
      name: Saturday
      default: false
      selector:
        boolean:
    sunday_enabled:
      name: Sunday
      default: false
      selector:
        boolean:
    # Create a variable to capture the desired time for the automation to run
    scheduled_time:
      name: Scheduled Update Time
      description: Choose the time of the day to run the firmware update. Note than this is in 12-hour format, and you will need to select AM or PM.
      default: "11:00"
      # Use a selector, to pick the desired time
      selector:
        time: {}

# Prevent the automation from running concurrently
mode: single

# Define the variables used in the Action section
variables:
  current_day: "{{ now().weekday() | int }}"
  monday_enabled: !input monday_enabled
  tuesday_enabled: !input tuesday_enabled
  wednesday_enabled: !input wednesday_enabled
  thursday_enabled: !input thursday_enabled
  friday_enabled: !input friday_enabled
  saturday_enabled: !input saturday_enabled
  sunday_enabled: !input sunday_enabled

# Define the trigger for the automation
trigger:
  # Using time as the condition here, checking that the current time matches the capture desired/scheduled time for the update
  platform: time
  at: !input scheduled_time

# Use an OR condition table to check against the selected day; this was inspired by a blueprint created by delphiki (https://community.home-assistant.io/u/delphiki)
condition:
 # Use on OR structure to check if current day matches any of the selected days
 condition: or
 conditions: 
 - condition: template
   value_template: "{{ (current_day == 0 and monday_enabled) }}"
 - condition: template
   value_template: "{{ (current_day == 1 and tuesday_enabled) }}" 
 - condition: template
   value_template: "{{ (current_day == 2 and wednesday_enabled) }}" 
 - condition: template
   value_template: "{{ (current_day == 3 and thursday_enabled) }}" 
 - condition: template
   value_template: "{{ (current_day == 4 and friday_enabled) }}" 
 - condition: template
   value_template: "{{ (current_day == 5 and saturday_enabled) }}" 
 - condition: template
   value_template: "{{ (current_day == 6 and sunday_enabled) }}" 

# This section will simply call the MQTT Publish service to run the update command, as define in the Shelly MQTT API
action:
  # A very simple MQTT statement (topic and payload), which it will check if there's a more recent firmware, then if true - apply it
  - service: mqtt.publish
    data:
      # Please note that during a firmware update, lights connected to Shellies may flash, and devices may lose power
      topic: shellies/command
      payload: update_fw
      # Use QoS2 for confident messaging
      qos: 2
      # No need to retain
      retain: false