When the light starts flashing green, the speaker has been reset. The process to reset the Sonos One is the same for the One SL, Five, Beam (Gen 1 and 2), Arc, Ray, Sub, Sub Mini, Port and Amp.

Sonos is having a massive March Madness sale, with the Ray soundbar now available for just $179, down from $279, and other Sonos products also discounted.