Sonos: Flashing white
The Sonos product is powered on and booting up. It also flashes white while waiting to connect to Wi-Fi.
Applies to: Sonos speakers and components. What you see: white, flashing or blinking.
What to do
Sonos’s page gives no step for this light; the meaning above is all it says.
Source
Sonos’s own support page, read on the date shown.
- Sonos: Sonos LED lights — Sonos speakers, portable speakers and components (status light section). support.sonos.com Checked 2026-09-29.
The same colour on other speakers
Another maker’s speaker can use this colour for something else entirely.