Yes, both Gen 1 Decora Smart with HomeKit Technology (DH***) and Gen 2 Decora Smart Wi-Fi (D2***) products can update firmware and change device settings without creating a My Leviton account.
Notes:
- Decora Smart Wi-Fi Gen 1 products (DW***) do not support HomeKit technology
- If you have been using the Leviton Decora Smart Home app with your Decora Smart with HomeKit Technology (DH***) products, you can now switch to the My Leviton app
Start by Downloading and installing the My Leviton for your iOS device from the Apple App Store.
Add the Leviton Decora Smart accessories in the Apple Home App: