This article discuses the various ways to update the firmware in Decora Smart 1st Gen with HomeKit Technology devices (DHxxx), how to update the firmware if a device cannot be located on the network, and troubleshooting tips that can be used to help in the updating process.

In early 2021 Leviton introduced the Decora Smart Wi-Fi 2nd Gen Switch and dimmer (D2xxx). These products continue to work iOS Home App as well as the My Leviton iOS App.  Please see Checking and Updating Firmware on Decora Smart® Wi-Fi Devices for more information.

Updating Devices

To update firmware in Decora Smart with HomeKit Technology devices, use the Leviton Decora Smart Home app. Make sure that your iOS device that is running the Decora Smart Home app is on the same Wi-Fi network as the Decora Smart with HomeKit Technology devices, and then:

Step 1: Go to the Apple App Store and verify that you have the Leviton Decora Smart Home app installed on your iOS device. If not, install the app. If an update is available, install the update.

Step 2: Enter the Leviton Decora Smart Home App. On the Accessories tab, choose your light and use the
on/off button to control the light (see Screen 1).

• If the light does not turn on or off or if the icon shows lack of connection (see Screen 2) please see the Troubleshooting section of this article.

Step 3: Choose a method for updating devices:

• Update Multiple Devices
• Update Individual Devices

Updating Multiple Devices

Use the Decora Smart Home App to update firmware:

• Before starting, make sure that your iOS device is charged or charging. The process generally takes a few minutes per device. On the Accessories screen, tap the settings menu (cog at the top left) to get to the Home Manager screen (Screen 3).
  
  
• On the Home Manager screen, tap the Update Firmware button below the Set as Primary option, to get to the Firmware Update Utility screen (Screen 4).

• On the Update Firmware utility screen, select the devices you would like to update or tap the “Select All” button to automatically select the entire list (Screens 5 and 6).
  
  
• Once all of the devices have been selected, tap the Begin Update button (Screen 6).

• Tap the Yes button on the Update Device Firmware pop-up to begin the process (Screen 7).
  
  
• Set your iOS device down while the Decora Smart Home app is updating the firmware in your devices. Wait for the process to complete (Screen 8).

• If the process is interrupted for any reason (e.g. you take a phone call on your iPhone), please repeat the steps under Updating Multiple Devices and select the devices that have not yet been updated.

Note: If this update process fails, please update the firmware using the Updating Individual Devices method.

Updating Individual Devices

Use the Decora Smart Home App to update firmware:

• On the Accessories screen, tap the device you would like to update to expand the items drop-down.
  
  
• Tap the Details button immediately below the item you selected to go to the Details Page for that device (Screen 9).
  
  
• On the Device Details screen, the app will prompt for any available firmware update (Screen 10).
  
  
• Select the Update Firmware button to start the update process (Screen 10).

• Tap the Yes button on the Update Device Firmware pop-up to proceed (Screen 11).
  
  
• Wait for the process to complete (Screen 12). This process generally takes a few minutes.

• Continue onto the next device.

Note: If this update process fails, please follow the steps under Firmware Update not Successful.

Firmware Update not Successful

If the Decora Smart Home app is unsuccessful, please attempt to update the firmware as described under Updating Individual Devices. If the device cannot be located on the network, first make sure that you are able to successfully control the device using the Decora Smart Home app.

• If you are unable to successfully control the device using the Decora Smart Home app, please see the Troubleshooting section of this article.
  
  
• If you are able to successfully control the device, when attempting to update the firmware in a device using the Updating Individual Devices method, the following pop-up will be displayed:

Reset Device

The device may need to be restarted. Select Reset Device from the pop-up, allow the device to restart and then attempt to update the firmware.

Manual Update

If the device is still not able to be located on the network, select Manual Update from the pop-up. This will allow you to enter the IP address of the device that you are attempting to update.

1. Take note of the Network Name of the Decora Smart accessory (see below).
   
   
2. To locate the IP address of the device, select the bonjour link from the pop-up. This will prompt you to download the Discovery - DNS-SD Browser, which is used to browse local Bonjour services.

3. After downloading and installing the app, select _hap._tcp. to discover and display HomeKit accessories.

4. In the list, find the Network Name for the Decora Smart accessory noted above. For example:
Leviton Dimmer-01D85E

5. Take note of the IP address of the Decora Smart accessory (see below).

6. Return to the Decora Smart Home app and enter the IP address of the Decora Smart accessory in the IP address box and then select Submit.

Troubleshooting

If a Decora Smart with HomeKit Technology device is not responding, it will need to be online before the firmware can be updated.

To return a device to online status, please do the following:

Step 1: *Power cycle the Decora Smart with HomeKit Technology device.

• If the device is a dimmer (DH6HD or DH1KD), first turn the dimmer on. Notice the LEDs on
  the side showing the light level. Pull the bottom of the dim bar about ¼” towards you. The side LED will turn off. Wait a second and push the dim bar back in. The dimmer will reboot.
  
  
• If the device is a switch (DH15S), switch the circuit breaker for the circuit that is powering
  the device off for 1 second, and then switch it back on. The dimmer will reboot.

Step 2: Wait about 2 minutes and verify that the device is back online by controlling it from the Leviton Decora Smart Home app.

If the device is not back online after 2 minutes, follow the procedure below (it is important that the steps are performed in the order shown):

1. Using the Decora Smart Home app, remove the Decora Smart with HomeKit Technology device from the app by selecting Details for the device, and then Remove Accessory.
   
   
2. Factory Reset the Decora Smart with HomeKit Technology device by pressing and holding the top rocker for 15 seconds. The LED will first turn amber, continue holding for 15 seconds until the LED flashes alternating red/amber, and then release the rocker. After a few seconds, the LED will flash green.
   
   
3. Power cycle the device (see Step 1 above “Power cycle the Decora Smart with HomeKit device”)*.
   
   
4. Close the Decora Smart Home app and the Apple Home app and make sure that neither of the apps are running in the background.
   
   
5. Go to Settings on your iOS device and select Wi-Fi. Turn off Wi-Fi for a few seconds and then turn Wi-Fi back on.
   
   
6. Power off your iOS device.
   
   
7. Turn on your iOS device and open the Decora Smart Home app.
   
   
8. Add the Decora Smart with HomeKit Technology device to the app using Add Accessory. Follow the on-screen prompts.