Nabu Casa prepares a factory firmware path for Home Assistant Voice Preview Edition that encrypts saved settings, verifies firmware signatures and blocks update downgrades. Keith Burzinski connects it to Nabu Casa’s signing and distribution system, with a 15-minute timeout for initial provisioning.
Existing units keep their current ESPHome update channel and need a separate migration. Developers who manually flash this configuration over USB onto an existing unit permanently program an encryption key into the chip and clear its saved preferences once, including Wi-Fi credentials and the Home Assistant connection key.