Lock showing as not certified and Homekey no longer works

After updating to iOS 27.2, my U400 is now showing as it is not certified to work with iPhone. I can unlock it manually from the Home app with the toggle, but Homekey no longer works.

I’m not sure how to fix it. The Aqara app says I’m on the latest 3.1.1.0 firmware.

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Hi there, it looks like you’re experiencing a support-related issue. We’ve automatically created a support ticket for you and will reach out via the forum email within the next two business days.

If other members have any suggestions or insights on this topic, feel free to share!