ESPHome fixes a catch in turning on encrypted wireless updates: the previous design could require encryption before the installed firmware knew how to offer it. Firmware with a Home Assistant connection key offers encrypted transfers with that key. Older devices need an initial update without the encryption requirement, followed by one that enables it; the accompanying guide explains the sequence.
J. Nick Koston also updates Device Builder to protect against mismatched update and Home Assistant connection keys when configurations change. Together, the changes make last week’s encrypted-transfer feature more practical for existing devices.