https://www.cnet.com/news/smart-deadbolt-maker-accidentally-locks-out-its-customers/

Thinking of sticking a smart lock on your front door to help automate access into your home? A few hundred customers of a company called LockState might encourage you to think differently.

Those customers -- roughly 500 in total -- recently came home to discover that a botched firmware update had rendered their model LS-6i connected deadbolts inoperable.